25243606425 has 24 divisors (see below), whose sum is σ = 44191162656. Its totient is φ = 12671299840.

The previous prime is 25243606363. The next prime is 25243606441. The reversal of 25243606425 is 52460634252.

It is not a de Polignac number, because 25243606425 - 2⁶ = 25243606361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9898179 + ... + 9900728.

It is an arithmetic number, because the mean of its divisors is an integer number (1841298444).

Almost surely, 2^25243606425 is an apocalyptic number.

25243606425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25243606425 is a deficient number, since it is larger than the sum of its proper divisors (18947556231).

25243606425 is a wasteful number, since it uses less digits than its factorization.

25243606425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19798937 (or 19798932 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 25243606425 in words is "twenty-five billion, two hundred forty-three million, six hundred six thousand, four hundred twenty-five".