20125526640121 has 32 divisors (see below), whose sum is σ = 23473002470400. Its totient is φ = 16898319385920.

The previous prime is 20125526640119. The next prime is 20125526640133. The reversal of 20125526640121 is 12104662552102.

It is not a de Polignac number, because 20125526640121 - 2¹ = 20125526640119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20125526644121) 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, 135095086 + ... + 135243976.

It is an arithmetic number, because the mean of its divisors is an integer number (733531327200).

Almost surely, 2^{20125526640121} is an apocalyptic number.

It is an amenable number.

20125526640121 is a deficient number, since it is larger than the sum of its proper divisors (3347475830279).

20125526640121 is a wasteful number, since it uses less digits than its factorization.

20125526640121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150109.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 20125526640121 in words is "twenty trillion, one hundred twenty-five billion, five hundred twenty-six million, six hundred forty thousand, one hundred twenty-one".