Base | Representation |
---|---|
bin | 10000110000111… |
… | …11111111100001 |
3 | 100210122021010020 |
4 | 20120133333201 |
5 | 242000441400 |
6 | 21542224053 |
7 | 3325264545 |
oct | 1030377741 |
9 | 323567106 |
10 | 140640225 |
11 | 7242a0a0 |
12 | 3b125029 |
13 | 231a288b |
14 | 1496da25 |
15 | c5312a0 |
hex | 861ffe1 |
140640225 has 24 divisors (see below), whose sum is σ = 253665312. Its totient is φ = 68188800.
The previous prime is 140640187. The next prime is 140640251. The reversal of 140640225 is 522046041.
It is not a de Polignac number, because 140640225 - 26 = 140640161 is a prime.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 140640195 and 140640204.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84412 + ... + 86061.
It is an arithmetic number, because the mean of its divisors is an integer number (10569388).
Almost surely, 2140640225 is an apocalyptic number.
140640225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
140640225 is a deficient number, since it is larger than the sum of its proper divisors (113025087).
140640225 is a wasteful number, since it uses less digits than its factorization.
140640225 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 170497 (or 170492 counting only the distinct ones).
The product of its (nonzero) digits is 1920, while the sum is 24.
The square root of 140640225 is about 11859.1831506221. The cubic root of 140640225 is about 520.0397220642.
Adding to 140640225 its reverse (522046041), we get a palindrome (662686266).
The spelling of 140640225 in words is "one hundred forty million, six hundred forty thousand, two hundred twenty-five".
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