25165827225 has 336 divisors, whose sum is σ = 59330488320. Its totient is φ = 10280649600.

The previous prime is 25165827179. The next prime is 25165827233. The reversal of 25165827225 is 52272856152.

It is not a de Polignac number, because 25165827225 - 2⁷ = 25165827097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 110862562 + ... + 110862788.

Almost surely, 2^25165827225 is an apocalyptic number.

25165827225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25165827225 is an abundant number, since it is smaller than the sum of its proper divisors (34164661095).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25165827225 is a wasteful number, since it uses less digits than its factorization.

25165827225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 332 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The spelling of 25165827225 in words is "twenty-five billion, one hundred sixty-five million, eight hundred twenty-seven thousand, two hundred twenty-five".