20125601171256 has 64 divisors (see below), whose sum is σ = 57502087361280. Its totient is φ = 5750134790400.

The previous prime is 20125601171237. The next prime is 20125601171303. The reversal of 20125601171256 is 65217110652102.

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 15 ways as a sum of consecutive naturals, for example, 36047431 + ... + 36601481.

It is an arithmetic number, because the mean of its divisors is an integer number (898470115020).

Almost surely, 2^{20125601171256} is an apocalyptic number.

It is an amenable number.

20125601171256 is an abundant number, since it is smaller than the sum of its proper divisors (37376486190024).

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

20125601171256 is a wasteful number, since it uses less digits than its factorization.

20125601171256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770284 (or 770280 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 20125601171256 in words is "twenty trillion, one hundred twenty-five billion, six hundred one million, one hundred seventy-one thousand, two hundred fifty-six".