25990263 has 48 divisors (see below), whose sum is σ = 43636320. Its totient is φ = 14764032.

The previous prime is 25990247. The next prime is 25990273. The reversal of 25990263 is 36209952.

25990263 is a `hidden beast` number, since 2 + 599 + 0 + 2 + 63 = 666.

It is not a de Polignac number, because 25990263 - 2⁴ = 25990247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25990273) 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 47 ways as a sum of consecutive naturals, for example, 145108 + ... + 145286.

It is an arithmetic number, because the mean of its divisors is an integer number (909090).

Almost surely, 2^25990263 is an apocalyptic number.

25990263 is a deficient number, since it is larger than the sum of its proper divisors (17646057).

25990263 is a wasteful number, since it uses less digits than its factorization.

25990263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 25990263 is about 5098.0646327798. The cubic root of 25990263 is about 296.2126203973.

The spelling of 25990263 in words is "twenty-five million, nine hundred ninety thousand, two hundred sixty-three".