25005555025 has 48 divisors (see below), whose sum is σ = 34519540608. Its totient is φ = 17813952000.

The previous prime is 25005555011. The next prime is 25005555041. The reversal of 25005555025 is 52055550052.

It is not a de Polignac number, because 25005555025 - 2³¹ = 22858071377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13655860 + ... + 13657690.

It is an arithmetic number, because the mean of its divisors is an integer number (719157096).

Almost surely, 2^25005555025 is an apocalyptic number.

25005555025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25005555025 is a deficient number, since it is larger than the sum of its proper divisors (9513985583).

25005555025 is a wasteful number, since it uses less digits than its factorization.

25005555025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2837 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 34.

The spelling of 25005555025 in words is "twenty-five billion, five million, five hundred fifty-five thousand, twenty-five".