25252504553 has 4 divisors (see below), whose sum is σ = 26581583760. Its totient is φ = 23923425348.

The previous prime is 25252504549. The next prime is 25252504573. The reversal of 25252504553 is 35540525252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25252504553 - 2² = 25252504549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25252504523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664539575 + ... + 664539612.

It is an arithmetic number, because the mean of its divisors is an integer number (6645395940).

Almost surely, 2^25252504553 is an apocalyptic number.

It is an amenable number.

25252504553 is a deficient number, since it is larger than the sum of its proper divisors (1329079207).

25252504553 is a wasteful number, since it uses less digits than its factorization.

25252504553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329079206.

The product of its (nonzero) digits is 300000, while the sum is 38.

The spelling of 25252504553 in words is "twenty-five billion, two hundred fifty-two million, five hundred four thousand, five hundred fifty-three".