25587023 has 24 divisors (see below), whose sum is σ = 34052256. Its totient is φ = 18754560.

The previous prime is 25587013. The next prime is 25587031. The reversal of 25587023 is 32078552.

It is not a de Polignac number, because 25587023 - 2¹⁶ = 25521487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25587013) 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, 13511 + ... + 15287.

It is an arithmetic number, because the mean of its divisors is an integer number (1418844).

Almost surely, 2^25587023 is an apocalyptic number.

25587023 is a deficient number, since it is larger than the sum of its proper divisors (8465233).

25587023 is a wasteful number, since it uses less digits than its factorization.

25587023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 25587023 is about 5058.3616912989. The cubic root of 25587023 is about 294.6727118109.

It can be divided in two parts, 255 and 87023, that added together give a palindrome (87278).

The spelling of 25587023 in words is "twenty-five million, five hundred eighty-seven thousand, twenty-three".