25065024172121 has 16 divisors (see below), whose sum is σ = 26648382177600. Its totient is φ = 23530499310528.

The previous prime is 25065024172109. The next prime is 25065024172147. The reversal of 25065024172121 is 12127142056052.

It is a cyclic number.

It is not a de Polignac number, because 25065024172121 - 2¹⁸ = 25065023909977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25065824172121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6439895 + ... + 9570908.

It is an arithmetic number, because the mean of its divisors is an integer number (1665523886100).

Almost surely, 2^{25065024172121} is an apocalyptic number.

It is an amenable number.

25065024172121 is a deficient number, since it is larger than the sum of its proper divisors (1583358005479).

25065024172121 is a wasteful number, since it uses less digits than its factorization.

25065024172121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16012328.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 25065024172121 in words is "twenty-five trillion, sixty-five billion, twenty-four million, one hundred seventy-two thousand, one hundred twenty-one".