25887318025 has 24 divisors (see below), whose sum is σ = 33163948800. Its totient is φ = 20024750400.

The previous prime is 25887318011. The next prime is 25887318071. The reversal of 25887318025 is 52081378852.

It is not a de Polignac number, because 25887318025 - 2¹¹ = 25887315977 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25887318025.

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, 938886 + ... + 966064.

It is an arithmetic number, because the mean of its divisors is an integer number (1381831200).

Almost surely, 2^25887318025 is an apocalyptic number.

25887318025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25887318025 is a deficient number, since it is larger than the sum of its proper divisors (7276630775).

25887318025 is a wasteful number, since it uses less digits than its factorization.

25887318025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28449 (or 28444 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 49.

The spelling of 25887318025 in words is "twenty-five billion, eight hundred eighty-seven million, three hundred eighteen thousand, twenty-five".