25581875 has 30 divisors (see below), whose sum is σ = 35454276. Its totient is φ = 18300000.

The previous prime is 25581863. The next prime is 25581877. The reversal of 25581875 is 57818552.

It is not a de Polignac number, because 25581875 - 2¹⁶ = 25516339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25581877) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 419345 + ... + 419405.

Almost surely, 2^25581875 is an apocalyptic number.

25581875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25581875 is a deficient number, since it is larger than the sum of its proper divisors (9872401).

25581875 is an frugal number, since it uses more digits than its factorization.

25581875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 77 counting only the distinct ones).

The product of its digits is 112000, while the sum is 41.

The square root of 25581875 is about 5057.8528052920. The cubic root of 25581875 is about 294.6529481873.

The spelling of 25581875 in words is "twenty-five million, five hundred eighty-one thousand, eight hundred seventy-five".