125881910945 has 16 divisors (see below), whose sum is σ = 173050093440. Its totient is φ = 86113002624.

The previous prime is 125881910939. The next prime is 125881910963. The reversal of 125881910945 is 549019188521.

It is a cyclic number.

It is not a de Polignac number, because 125881910945 - 2⁴ = 125881910929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4277252 + ... + 4306581.

It is an arithmetic number, because the mean of its divisors is an integer number (10815630840).

Almost surely, 2^125881910945 is an apocalyptic number.

It is an amenable number.

125881910945 is a deficient number, since it is larger than the sum of its proper divisors (47168182495).

125881910945 is an equidigital number, since it uses as much as digits as its factorization.

125881910945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8584264.

The product of its (nonzero) digits is 1036800, while the sum is 53.

The spelling of 125881910945 in words is "one hundred twenty-five billion, eight hundred eighty-one million, nine hundred ten thousand, nine hundred forty-five".