125216061894 has 64 divisors (see below), whose sum is σ = 346918970880. Its totient is φ = 32523651360.

The previous prime is 125216061871. The next prime is 125216061899. The reversal of 125216061894 is 498160612521.

125216061894 is a `hidden beast` number, since 1 + 2 + 5 + 21 + 6 + 0 + 618 + 9 + 4 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125216061899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15053089 + ... + 15061404.

It is an arithmetic number, because the mean of its divisors is an integer number (5420608920).

Almost surely, 2^125216061894 is an apocalyptic number.

125216061894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

125216061894 is an abundant number, since it is smaller than the sum of its proper divisors (221702908986).

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

125216061894 is a wasteful number, since it uses less digits than its factorization.

125216061894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30114522 (or 30114516 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 125216061894 in words is "one hundred twenty-five billion, two hundred sixteen million, sixty-one thousand, eight hundred ninety-four".