25637852868625 has 8 divisors (see below), whose sum is σ = 31996040380200. Its totient is φ = 20510282294800.

The previous prime is 25637852868619. The next prime is 25637852868631. The reversal of 25637852868625 is 52686825873652.

It is an interprime number because it is at equal distance from previous prime (25637852868619) and next prime (25637852868631).

It can be written as a sum of positive squares in 4 ways, for example, as 33271219216 + 25604581649409 = 182404^2 + 5060097^2 .

It is not a de Polignac number, because 25637852868625 - 2¹⁵ = 25637852835857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102551411350 + ... + 102551411599.

It is an arithmetic number, because the mean of its divisors is an integer number (3999505047525).

Almost surely, 2^{25637852868625} is an apocalyptic number.

25637852868625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25637852868625 is a deficient number, since it is larger than the sum of its proper divisors (6358187511575).

25637852868625 is an equidigital number, since it uses as much as digits as its factorization.

25637852868625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205102822964 (or 205102822954 counting only the distinct ones).

The product of its digits is 2322432000, while the sum is 73.

The spelling of 25637852868625 in words is "twenty-five trillion, six hundred thirty-seven billion, eight hundred fifty-two million, eight hundred sixty-eight thousand, six hundred twenty-five".