25578663125 has 40 divisors (see below), whose sum is σ = 32734821504. Its totient is φ = 19971360000.

The previous prime is 25578663107. The next prime is 25578663137. The reversal of 25578663125 is 52136687552.

It is not a de Polignac number, because 25578663125 - 2⁸ = 25578662869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12718370 + ... + 12720380.

Almost surely, 2^25578663125 is an apocalyptic number.

25578663125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25578663125 is a deficient number, since it is larger than the sum of its proper divisors (7156158379).

25578663125 is an equidigital number, since it uses as much as digits as its factorization.

25578663125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511 (or 2496 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 50.

The spelling of 25578663125 in words is "twenty-five billion, five hundred seventy-eight million, six hundred sixty-three thousand, one hundred twenty-five".