25235725306121 has 64 divisors (see below), whose sum is σ = 28863166924800. Its totient is φ = 21853623052800.

The previous prime is 25235725306087. The next prime is 25235725306201. The reversal of 25235725306121 is 12160352753252.

It is not a de Polignac number, because 25235725306121 - 2²² = 25235721111817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25235725306321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12548843006 + ... + 12548845016.

It is an arithmetic number, because the mean of its divisors is an integer number (450986983200).

Almost surely, 2^{25235725306121} is an apocalyptic number.

It is an amenable number.

25235725306121 is a deficient number, since it is larger than the sum of its proper divisors (3627441618679).

25235725306121 is a wasteful number, since it uses less digits than its factorization.

25235725306121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 25235725306121 in words is "twenty-five trillion, two hundred thirty-five billion, seven hundred twenty-five million, three hundred six thousand, one hundred twenty-one".