25400204225 has 12 divisors (see below), whose sum is σ = 34359549360. Its totient is φ = 18472875600.

The previous prime is 25400204209. The next prime is 25400204227. The reversal of 25400204225 is 52240200452.

It is not a de Polignac number, because 25400204225 - 2⁴ = 25400204209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25400204194 and 25400204203.

It is not an unprimeable number, because it can be changed into a prime (25400204227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46181915 + ... + 46182464.

It is an arithmetic number, because the mean of its divisors is an integer number (2863295780).

Almost surely, 2^25400204225 is an apocalyptic number.

25400204225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25400204225 is a deficient number, since it is larger than the sum of its proper divisors (8959345135).

25400204225 is a wasteful number, since it uses less digits than its factorization.

25400204225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92364400 (or 92364395 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

Adding to 25400204225 its reverse (52240200452), we get a palindrome (77640404677).

The spelling of 25400204225 in words is "twenty-five billion, four hundred million, two hundred four thousand, two hundred twenty-five".