125009920536 has 32 divisors (see below), whose sum is σ = 312609466800. Its totient is φ = 41658684800.

The previous prime is 125009920531. The next prime is 125009920583. The reversal of 125009920536 is 635029900521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125009920531) 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, 614871 + ... + 792518.

Almost surely, 2^125009920536 is an apocalyptic number.

It is an amenable number.

125009920536 is an abundant number, since it is smaller than the sum of its proper divisors (187599546264).

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

125009920536 is a wasteful number, since it uses less digits than its factorization.

125009920536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411099 (or 1411095 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The spelling of 125009920536 in words is "one hundred twenty-five billion, nine million, nine hundred twenty thousand, five hundred thirty-six".