25531260 has 24 divisors (see below), whose sum is σ = 71487696. Its totient is φ = 6808320.

The previous prime is 25531249. The next prime is 25531271. The reversal of 25531260 is 6213552.

It is an interprime number because it is at equal distance from previous prime (25531249) and next prime (25531271).

It is a self number, because there is not a number n which added to its sum of digits gives 25531260.

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, 212701 + ... + 212820.

It is an arithmetic number, because the mean of its divisors is an integer number (2978654).

Almost surely, 2^25531260 is an apocalyptic number.

25531260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25531260 is an abundant number, since it is smaller than the sum of its proper divisors (45956436).

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

25531260 is a wasteful number, since it uses less digits than its factorization.

25531260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425533 (or 425531 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 25531260 is about 5052.8467223932. The cubic root of 25531260 is about 294.4584914254.

The spelling of 25531260 in words is "twenty-five million, five hundred thirty-one thousand, two hundred sixty".