Base | Representation |
---|---|
bin | 111101000111101101… |
… | …0000101111111000001 |
3 | 110112210101102220101021 |
4 | 1322033122011333001 |
5 | 4122302240013100 |
6 | 140144150105441 |
7 | 12324423046321 |
oct | 1721732057701 |
9 | 415711386337 |
10 | 131255001025 |
11 | 50735031a65 |
12 | 2153104b281 |
13 | c4b9bb57a5 |
14 | 64d2035281 |
15 | 3633115a1a |
hex | 1e8f685fc1 |
131255001025 has 24 divisors (see below), whose sum is σ = 170046241344. Its totient is φ = 100312238400.
The previous prime is 131255001019. The next prime is 131255001029. The reversal of 131255001025 is 520100552131.
It is not a de Polignac number, because 131255001025 - 211 = 131254998977 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (25).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (131255001029) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315070 + ... + 601480.
It is an arithmetic number, because the mean of its divisors is an integer number (7085260056).
Almost surely, 2131255001025 is an apocalyptic number.
It is an amenable number.
131255001025 is a deficient number, since it is larger than the sum of its proper divisors (38791240319).
131255001025 is a wasteful number, since it uses less digits than its factorization.
131255001025 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 287241 (or 287236 counting only the distinct ones).
The product of its (nonzero) digits is 1500, while the sum is 25.
Adding to 131255001025 its reverse (520100552131), we get a palindrome (651355553156).
The spelling of 131255001025 in words is "one hundred thirty-one billion, two hundred fifty-five million, one thousand, twenty-five".
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