25555008025 has 12 divisors (see below), whose sum is σ = 32362428672. Its totient is φ = 20009026640.

The previous prime is 25555008023. The next prime is 25555008047. The reversal of 25555008025 is 52080055552.

It is not a de Polignac number, because 25555008025 - 2¹ = 25555008023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25555008023) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10873297 + ... + 10875646.

It is an arithmetic number, because the mean of its divisors is an integer number (2696869056).

Almost surely, 2^25555008025 is an apocalyptic number.

25555008025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25555008025 is a deficient number, since it is larger than the sum of its proper divisors (6807420647).

25555008025 is a wasteful number, since it uses less digits than its factorization.

25555008025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21749000 (or 21748995 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 25555008025 in words is "twenty-five billion, five hundred fifty-five million, eight thousand, twenty-five".