25423590 has 16 divisors (see below), whose sum is σ = 61016688. Its totient is φ = 6779616.

The previous prime is 25423589. The next prime is 25423613. The reversal of 25423590 is 9532452.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 847453 = 25423590 / (2 + 5 + 4 + 2 + 3 + 5 + 9 + 0).

It is a congruent number.

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, 423697 + ... + 423756.

It is an arithmetic number, because the mean of its divisors is an integer number (3813543).

Almost surely, 2^25423590 is an apocalyptic number.

25423590 is an abundant number, since it is smaller than the sum of its proper divisors (35593098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25423590 is a wasteful number, since it uses less digits than its factorization.

25423590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847463.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 25423590 is about 5042.1810756854. The cubic root of 25423590 is about 294.0439797227.

The spelling of 25423590 in words is "twenty-five million, four hundred twenty-three thousand, five hundred ninety".