125516211500 has 24 divisors (see below), whose sum is σ = 274127407008. Its totient is φ = 50206484400.

The previous prime is 125516211493. The next prime is 125516211511. The reversal of 125516211500 is 5112615521.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125515712 + ... + 125516711.

It is an arithmetic number, because the mean of its divisors is an integer number (11421975292).

Almost surely, 2^125516211500 is an apocalyptic number.

125516211500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125516211500 is an abundant number, since it is smaller than the sum of its proper divisors (148611195508).

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

125516211500 is a wasteful number, since it uses less digits than its factorization.

125516211500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251032442 (or 251032430 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 29.

The spelling of 125516211500 in words is "one hundred twenty-five billion, five hundred sixteen million, two hundred eleven thousand, five hundred".