25305325 has 6 divisors (see below), whose sum is σ = 31378634. Its totient is φ = 20244240.

The previous prime is 25305311. The next prime is 25305337. The reversal of 25305325 is 52350352.

It can be written as a sum of positive squares in 3 ways, for example, as 34596 + 25270729 = 186^2 + 5027^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25305325 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1012213 = 25305325 / (2 + 5 + 3 + 0 + 5 + 3 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25305325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506082 + ... + 506131.

Almost surely, 2^25305325 is an apocalyptic number.

25305325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25305325 is a deficient number, since it is larger than the sum of its proper divisors (6073309).

25305325 is a wasteful number, since it uses less digits than its factorization.

25305325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012223 (or 1012218 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 25305325 is about 5030.4398416043. The cubic root of 25305325 is about 293.5873280706.

Adding to 25305325 its reverse (52350352), we get a palindrome (77655677).

The spelling of 25305325 in words is "twenty-five million, three hundred five thousand, three hundred twenty-five".