125515015450 has 24 divisors (see below), whose sum is σ = 254681377920. Its totient is φ = 45641823600.

The previous prime is 125515015447. The next prime is 125515015471. The reversal of 125515015450 is 54510515521.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114104010 + ... + 114105109.

It is an arithmetic number, because the mean of its divisors is an integer number (10611724080).

Almost surely, 2^125515015450 is an apocalyptic number.

125515015450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125515015450 is an abundant number, since it is smaller than the sum of its proper divisors (129166362470).

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

125515015450 is a wasteful number, since it uses less digits than its factorization.

125515015450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228209142 (or 228209137 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 125515015450 in words is "one hundred twenty-five billion, five hundred fifteen million, fifteen thousand, four hundred fifty".