25228944 has 60 divisors (see below), whose sum is σ = 76042876. Its totient is φ = 7762176.

The previous prime is 25228943. The next prime is 25228949. The reversal of 25228944 is 44982252.

It can be written as a sum of positive squares in 2 ways, for example, as 10112400 + 15116544 = 3180^2 + 3888^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25228899 and 25228908.

It is not an unprimeable number, because it can be changed into a prime (25228943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4867 + ... + 8610.

Almost surely, 2^25228944 is an apocalyptic number.

25228944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25228944 is an abundant number, since it is smaller than the sum of its proper divisors (50813932).

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

25228944 is a wasteful number, since it uses less digits than its factorization.

25228944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13504 (or 13495 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 25228944 is about 5022.8422232835. The cubic root of 25228944 is about 293.2916446723.

The spelling of 25228944 in words is "twenty-five million, two hundred twenty-eight thousand, nine hundred forty-four".