25413550425 has 72 divisors (see below), whose sum is σ = 49135694400. Its totient is φ = 12517464960.

The previous prime is 25413550417. The next prime is 25413550429. The reversal of 25413550425 is 52405531452.

25413550425 is a `hidden beast` number, since 2 + 54 + 13 + 550 + 42 + 5 = 666.

It is not a de Polignac number, because 25413550425 - 2³ = 25413550417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25413550425.

It is not an unprimeable number, because it can be changed into a prime (25413550429) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65406 + ... + 234744.

It is an arithmetic number, because the mean of its divisors is an integer number (682440200).

Almost surely, 2^25413550425 is an apocalyptic number.

25413550425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25413550425 is a deficient number, since it is larger than the sum of its proper divisors (23722143975).

25413550425 is a wasteful number, since it uses less digits than its factorization.

25413550425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169407 (or 169399 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 25413550425 in words is "twenty-five billion, four hundred thirteen million, five hundred fifty thousand, four hundred twenty-five".