| Base | Representation |
|---|---|
| bin | 1000000110111110100… |
| … | …0011101010000001001 |
| 3 | 111022120212210020000100 |
| 4 | 2001233220131100021 |
| 5 | 4240302312030100 |
| 6 | 143555440000013 |
| 7 | 13031164005564 |
| oct | 2015750352011 |
| 9 | 438525706010 |
| 10 | 139311830025 |
| 11 | 54099994925 |
| 12 | 22bbb300009 |
| 13 | 101a2135424 |
| 14 | 6a580934db |
| 15 | 39555d9400 |
| hex | 206fa1d409 |
139311830025 has 81 divisors (see below), whose sum is σ = 252722108821. Its totient is φ = 73359065280.
The previous prime is 139311830023. The next prime is 139311830057. The reversal of 139311830025 is 520038113931.
The square root of 139311830025 is 373245.
It is a perfect power (a square), and thus also a powerful number.
139311830025 is a `hidden beast` number, since 1 + 39 + 311 + 8 + 300 + 2 + 5 = 666.
It can be written as a sum of positive squares in 4 ways, for example, as 41578064649 + 97733765376 = 203907^2 + 312624^2 .
It is not a de Polignac number, because 139311830025 - 21 = 139311830023 is a prime.
It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (139311830023) by changing a digit.
It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 834202492 + ... + 834202658.
Almost surely, 2139311830025 is an apocalyptic number.
139311830025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
139311830025 is the 373245-th square number.
139311830025 is the 186623-rd centered octagonal number.
It is an amenable number.
139311830025 is a deficient number, since it is larger than the sum of its proper divisors (113410278796).
139311830025 is an equidigital number, since it uses as much as digits as its factorization.
139311830025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 648 (or 324 counting only the distinct ones).
The product of its (nonzero) digits is 19440, while the sum is 36.
Multiplying 139311830025 by its sum of digits (36), we get a square (5015225880900 = 22394702).
Adding to 139311830025 its reverse (520038113931), we get a palindrome (659349943956).
The spelling of 139311830025 in words is "one hundred thirty-nine billion, three hundred eleven million, eight hundred thirty thousand, twenty-five".
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