125640765252 has 24 divisors (see below), whose sum is σ = 325735317600. Its totient is φ = 41880255048.

The previous prime is 125640765247. The next prime is 125640765259. The reversal of 125640765252 is 252567046521.

125640765252 is a `hidden beast` number, since 1 + 2 + 56 + 4 + 0 + 76 + 525 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 125640765198 and 125640765207.

It is not an unprimeable number, because it can be changed into a prime (125640765259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581670102 + ... + 581670317.

It is an arithmetic number, because the mean of its divisors is an integer number (13572304900).

Almost surely, 2^125640765252 is an apocalyptic number.

125640765252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125640765252 is an abundant number, since it is smaller than the sum of its proper divisors (200094552348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125640765252 is a wasteful number, since it uses less digits than its factorization.

125640765252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163340432 (or 1163340424 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 125640765252 in words is "one hundred twenty-five billion, six hundred forty million, seven hundred sixty-five thousand, two hundred fifty-two".