25130624 has 32 divisors (see below), whose sum is σ = 53014500. Its totient is φ = 11825152.

The previous prime is 25130603. The next prime is 25130627. The reversal of 25130624 is 42603152.

It can be written as a sum of positive squares in 2 ways, for example, as 20430400 + 4700224 = 4520^2 + 2168^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 25130624.

It is not an unprimeable number, because it can be changed into a prime (25130627) 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, 3599 + ... + 7950.

Almost surely, 2^25130624 is an apocalyptic number.

It is an amenable number.

25130624 is an abundant number, since it is smaller than the sum of its proper divisors (27883876).

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

25130624 is a wasteful number, since it uses less digits than its factorization.

25130624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11580 (or 11568 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25130624 is about 5013.0453818014. The cubic root of 25130624 is about 292.9101519523.

Adding to 25130624 its reverse (42603152), we get a palindrome (67733776).

The spelling of 25130624 in words is "twenty-five million, one hundred thirty thousand, six hundred twenty-four".