25488720 has 60 divisors (see below), whose sum is σ = 85602036. Its totient is φ = 6796800.

The previous prime is 25488703. The next prime is 25488721. The reversal of 25488720 is 2788452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7033104 + 18455616 = 2652^2 + 4296^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25488721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16981 + ... + 18420.

Almost surely, 2^25488720 is an apocalyptic number.

25488720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25488720 is an abundant number, since it is smaller than the sum of its proper divisors (60113316).

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

25488720 is a wasteful number, since it uses less digits than its factorization.

25488720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35420 (or 35411 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 25488720 is about 5048.6354592107. The cubic root of 25488720 is about 294.2948589773.

The spelling of 25488720 in words is "twenty-five million, four hundred eighty-eight thousand, seven hundred twenty".