25113520097 has 4 divisors (see below), whose sum is σ = 25539173040. Its totient is φ = 24687867156.

The previous prime is 25113520027. The next prime is 25113520129. The reversal of 25113520097 is 79002531152.

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 25113520097 - 2²⁶ = 25046411233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25113520027) 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, 212826383 + ... + 212826500.

It is an arithmetic number, because the mean of its divisors is an integer number (6384793260).

Almost surely, 2^25113520097 is an apocalyptic number.

It is an amenable number.

25113520097 is a deficient number, since it is larger than the sum of its proper divisors (425652943).

25113520097 is an equidigital number, since it uses as much as digits as its factorization.

25113520097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425652942.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 25113520097 in words is "twenty-five billion, one hundred thirteen million, five hundred twenty thousand, ninety-seven".