25585177287025 has 24 divisors (see below), whose sum is σ = 31958880968960. Its totient is φ = 20318108912640.

The previous prime is 25585177287023. The next prime is 25585177287091. The reversal of 25585177287025 is 52078277158552.

It is not a de Polignac number, because 25585177287025 - 2¹ = 25585177287023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25585177287023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3492405 + ... + 7960354.

Almost surely, 2^{25585177287025} is an apocalyptic number.

25585177287025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25585177287025 is a deficient number, since it is larger than the sum of its proper divisors (6373703681935).

25585177287025 is a wasteful number, since it uses less digits than its factorization.

25585177287025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11453425 (or 11453420 counting only the distinct ones).

The product of its (nonzero) digits is 109760000, while the sum is 64.

The spelling of 25585177287025 in words is "twenty-five trillion, five hundred eighty-five billion, one hundred seventy-seven million, two hundred eighty-seven thousand, twenty-five".