25174854461 has 2 divisors, whose sum is σ = 25174854462. Its totient is φ = 25174854460.

The previous prime is 25174854431. The next prime is 25174854503. The reversal of 25174854461 is 16445847152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23748659236 + 1426195225 = 154106^2 + 37765^2 .

It is a cyclic number.

It is not a de Polignac number, because 25174854461 - 2³⁴ = 7994985277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25174854421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12587427230 + 12587427231.

It is an arithmetic number, because the mean of its divisors is an integer number (12587427231).

Almost surely, 2^25174854461 is an apocalyptic number.

It is an amenable number.

25174854461 is a deficient number, since it is larger than the sum of its proper divisors (1).

25174854461 is an equidigital number, since it uses as much as digits as its factorization.

25174854461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1075200, while the sum is 47.

The spelling of 25174854461 in words is "twenty-five billion, one hundred seventy-four million, eight hundred fifty-four thousand, four hundred sixty-one".