125012261055555 has 48 divisors (see below), whose sum is σ = 219774948719040. Its totient is φ = 65723650540800.

The previous prime is 125012261055503. The next prime is 125012261055569. The reversal of 125012261055555 is 555550162210521.

125012261055555 is a `hidden beast` number, since 1 + 2 + 5 + 0 + 1 + 22 + 610 + 5 + 5 + 5 + 5 + 5 = 666.

It is not a de Polignac number, because 125012261055555 - 2⁷ = 125012261055427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 125012261055555.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16908745 + ... + 23150165.

It is an arithmetic number, because the mean of its divisors is an integer number (4578644764980).

Almost surely, 2^{125012261055555} is an apocalyptic number.

125012261055555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125012261055555 is a deficient number, since it is larger than the sum of its proper divisors (94762687663485).

125012261055555 is a wasteful number, since it uses less digits than its factorization.

125012261055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247772 (or 6247769 counting only the distinct ones).

The product of its (nonzero) digits is 750000, while the sum is 45.

The spelling of 125012261055555 in words is "one hundred twenty-five trillion, twelve billion, two hundred sixty-one million, fifty-five thousand, five hundred fifty-five".