25228816 has 20 divisors (see below), whose sum is σ = 51756732. Its totient is φ = 11872256.

The previous prime is 25228787. The next prime is 25228837. The reversal of 25228816 is 61882252.

It can be written as a sum of positive squares in 2 ways, for example, as 14470416 + 10758400 = 3804^2 + 3280^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46105 + ... + 46648.

Almost surely, 2^25228816 is an apocalyptic number.

It is an amenable number.

25228816 is an abundant number, since it is smaller than the sum of its proper divisors (26527916).

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

25228816 is a wasteful number, since it uses less digits than its factorization.

25228816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92778 (or 92772 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 25228816 is about 5022.8294814775. The cubic root of 25228816 is about 293.2911486628.

The spelling of 25228816 in words is "twenty-five million, two hundred twenty-eight thousand, eight hundred sixteen".