25651263 has 16 divisors (see below), whose sum is σ = 38180736. Its totient is φ = 15183840.

The previous prime is 25651261. The next prime is 25651267. The reversal of 25651263 is 36215652.

It is not a de Polignac number, because 25651263 - 2¹ = 25651261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25651263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25651261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7620 + ... + 10457.

It is an arithmetic number, because the mean of its divisors is an integer number (2386296).

Almost surely, 2^25651263 is an apocalyptic number.

25651263 is a deficient number, since it is larger than the sum of its proper divisors (12529473).

25651263 is a wasteful number, since it uses less digits than its factorization.

25651263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18134.

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

The square root of 25651263 is about 5064.7075927441. The cubic root of 25651263 is about 294.9191121713.

It can be divided in two parts, 2565 and 1263, that added together give a triangular number (3828 = T₈₇).

The spelling of 25651263 in words is "twenty-five million, six hundred fifty-one thousand, two hundred sixty-three".