125640764 has 6 divisors (see below), whose sum is σ = 219871344. Its totient is φ = 62820380.

The previous prime is 125640763. The next prime is 125640817. The reversal of 125640764 is 467046521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125640763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15705092 + ... + 15705099.

It is an arithmetic number, because the mean of its divisors is an integer number (36645224).

Almost surely, 2^125640764 is an apocalyptic number.

It is an amenable number.

125640764 is a deficient number, since it is larger than the sum of its proper divisors (94230580).

125640764 is a wasteful number, since it uses less digits than its factorization.

125640764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31410195 (or 31410193 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 125640764 is about 11208.9590952952. The cubic root of 125640764 is about 500.8528963085.

The spelling of 125640764 in words is "one hundred twenty-five million, six hundred forty thousand, seven hundred sixty-four".