25944280 has 16 divisors (see below), whose sum is σ = 58374720. Its totient is φ = 10377696.

The previous prime is 25944277. The next prime is 25944283. The reversal of 25944280 is 8244952.

It is an interprime number because it is at equal distance from previous prime (25944277) and next prime (25944283).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25944283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324264 + ... + 324343.

It is an arithmetic number, because the mean of its divisors is an integer number (3648420).

Almost surely, 2^25944280 is an apocalyptic number.

25944280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25944280 is an abundant number, since it is smaller than the sum of its proper divisors (32430440).

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

25944280 is a wasteful number, since it uses less digits than its factorization.

25944280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648618 (or 648614 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 25944280 is about 5093.5527875934. The cubic root of 25944280 is about 296.0378269164.

The spelling of 25944280 in words is "twenty-five million, nine hundred forty-four thousand, two hundred eighty".