25090720 has 24 divisors (see below), whose sum is σ = 59277204. Its totient is φ = 10036224.

The previous prime is 25090717. The next prime is 25090721. The reversal of 25090720 is 2709052.

It can be written as a sum of positive squares in 2 ways, for example, as 22619536 + 2471184 = 4756^2 + 1572^2 .

It is not an unprimeable number, because it can be changed into a prime (25090721) 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, 78249 + ... + 78568.

Almost surely, 2^25090720 is an apocalyptic number.

25090720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25090720 is an abundant number, since it is smaller than the sum of its proper divisors (34186484).

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

25090720 is a wasteful number, since it uses less digits than its factorization.

25090720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156832 (or 156824 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 25090720 is about 5009.0637847805. The cubic root of 25090720 is about 292.7550360449.

Adding to 25090720 its reverse (2709052), we get a palindrome (27799772).

The spelling of 25090720 in words is "twenty-five million, ninety thousand, seven hundred twenty".