25830390 has 16 divisors (see below), whose sum is σ = 61993008. Its totient is φ = 6888096.

The previous prime is 25830383. The next prime is 25830407. The reversal of 25830390 is 9303852.

It is a happy number.

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: 861013 = 25830390 / (2 + 5 + 8 + 3 + 0 + 3 + 9 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430477 + ... + 430536.

It is an arithmetic number, because the mean of its divisors is an integer number (3874563).

Almost surely, 2^25830390 is an apocalyptic number.

25830390 is an abundant number, since it is smaller than the sum of its proper divisors (36162618).

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

25830390 is a wasteful number, since it uses less digits than its factorization.

25830390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861023.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 25830390 is about 5082.3606719712. The cubic root of 25830390 is about 295.6040099849.

The spelling of 25830390 in words is "twenty-five million, eight hundred thirty thousand, three hundred ninety".