125261651407 has 16 divisors (see below), whose sum is σ = 127431673600. Its totient is φ = 123110813952.

The previous prime is 125261651399. The next prime is 125261651413. The reversal of 125261651407 is 704156162521.

It is a cyclic number.

It is not a de Polignac number, because 125261651407 - 2³ = 125261651399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125261651407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125261651447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26860558 + ... + 26865220.

It is an arithmetic number, because the mean of its divisors is an integer number (7964479600).

Almost surely, 2^125261651407 is an apocalyptic number.

125261651407 is a deficient number, since it is larger than the sum of its proper divisors (2170022193).

125261651407 is a wasteful number, since it uses less digits than its factorization.

125261651407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 125261651407 in words is "one hundred twenty-five billion, two hundred sixty-one million, six hundred fifty-one thousand, four hundred seven".