25115222706225 has 24 divisors (see below), whose sum is σ = 41524006644672. Its totient is φ = 13394730033600.

The previous prime is 25115222706151. The next prime is 25115222706317. The reversal of 25115222706225 is 52260722251152.

It is not a de Polignac number, because 25115222706225 - 2²⁶ = 25115155597361 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, 22865115 + ... + 23938335.

It is an arithmetic number, because the mean of its divisors is an integer number (1730166943528).

Almost surely, 2^{25115222706225} is an apocalyptic number.

25115222706225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25115222706225 is a deficient number, since it is larger than the sum of its proper divisors (16408783938447).

25115222706225 is a wasteful number, since it uses less digits than its factorization.

25115222706225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385257 (or 1385252 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

Adding to 25115222706225 its reverse (52260722251152), we get a palindrome (77375944957377).

The spelling of 25115222706225 in words is "twenty-five trillion, one hundred fifteen billion, two hundred twenty-two million, seven hundred six thousand, two hundred twenty-five".