125640464007 has 8 divisors (see below), whose sum is σ = 167669795584. Its totient is φ = 83685720888.

The previous prime is 125640463999. The next prime is 125640464017. The reversal of 125640464007 is 700464046521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125640464007 - 2³ = 125640463999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125640464017) 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, 18643183 + ... + 18649920.

It is an arithmetic number, because the mean of its divisors is an integer number (20958724448).

Almost surely, 2^125640464007 is an apocalyptic number.

125640464007 is a deficient number, since it is larger than the sum of its proper divisors (42029331577).

125640464007 is a wasteful number, since it uses less digits than its factorization.

125640464007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37294229.

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 125640464007 in words is "one hundred twenty-five billion, six hundred forty million, four hundred sixty-four thousand, seven".