125551554012 has 24 divisors (see below), whose sum is σ = 325504029200. Its totient is φ = 41850517968.

The previous prime is 125551553927. The next prime is 125551554043. The reversal of 125551554012 is 210455155521.

125551554012 is a `hidden beast` number, since 1 + 2 + 5 + 551 + 55 + 40 + 12 = 666.

It is a super-2 number, since 2×125551554012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581257087 + ... + 581257302.

Almost surely, 2^125551554012 is an apocalyptic number.

125551554012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125551554012 is an abundant number, since it is smaller than the sum of its proper divisors (199952475188).

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

125551554012 is a wasteful number, since it uses less digits than its factorization.

125551554012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162514402 (or 1162514394 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 125551554012 in words is "one hundred twenty-five billion, five hundred fifty-one million, five hundred fifty-four thousand, twelve".