25524017261 has 2 divisors, whose sum is σ = 25524017262. Its totient is φ = 25524017260.

The previous prime is 25524017249. The next prime is 25524017381. The reversal of 25524017261 is 16271042552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21132436900 + 4391580361 = 145370^2 + 66269^2 .

It is a cyclic number.

It is not a de Polignac number, because 25524017261 - 2²⁶ = 25456908397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25524017461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762008630 + 12762008631.

It is an arithmetic number, because the mean of its divisors is an integer number (12762008631).

Almost surely, 2^25524017261 is an apocalyptic number.

It is an amenable number.

25524017261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25524017261 is an equidigital number, since it uses as much as digits as its factorization.

25524017261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 25524017261 in words is "twenty-five billion, five hundred twenty-four million, seventeen thousand, two hundred sixty-one".