125052855978 has 32 divisors (see below), whose sum is σ = 269690379840. Its totient is φ = 38527194240.

The previous prime is 125052855943. The next prime is 125052856009. The reversal of 125052855978 is 879558250521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13372825 + ... + 13382172.

It is an arithmetic number, because the mean of its divisors is an integer number (8427824370).

Almost surely, 2^125052855978 is an apocalyptic number.

125052855978 is an abundant number, since it is smaller than the sum of its proper divisors (144637523862).

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

125052855978 is a wasteful number, since it uses less digits than its factorization.

125052855978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26755062.

The product of its (nonzero) digits is 10080000, while the sum is 57.

The spelling of 125052855978 in words is "one hundred twenty-five billion, fifty-two million, eight hundred fifty-five thousand, nine hundred seventy-eight".