25990331 has 16 divisors (see below), whose sum is σ = 28444608. Its totient is φ = 23654400.

The previous prime is 25990319. The next prime is 25990337. The reversal of 25990331 is 13309952.

It is a cyclic number.

It is not a de Polignac number, because 25990331 - 2¹⁴ = 25973947 is a prime.

It is a super-2 number, since 2×25990331² = 1350994610979122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25990337) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 73451 + ... + 73803.

It is an arithmetic number, because the mean of its divisors is an integer number (1777788).

Almost surely, 2^25990331 is an apocalyptic number.

25990331 is a deficient number, since it is larger than the sum of its proper divisors (2454277).

25990331 is a wasteful number, since it uses less digits than its factorization.

25990331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 25990331 is about 5098.0713019729. The cubic root of 25990331 is about 296.2128787305.

The spelling of 25990331 in words is "twenty-five million, nine hundred ninety thousand, three hundred thirty-one".