25395732 has 18 divisors (see below), whose sum is σ = 64194858. Its totient is φ = 8465232.

The previous prime is 25395707. The next prime is 25395737. The reversal of 25395732 is 23759352.

It can be written as a sum of positive squares in only one way, i.e., 21846276 + 3549456 = 4674^2 + 1884^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 705437 = 25395732 / (2 + 5 + 3 + 9 + 5 + 7 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25395737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 352683 + ... + 352754.

It is an arithmetic number, because the mean of its divisors is an integer number (3566381).

Almost surely, 2^25395732 is an apocalyptic number.

It is an amenable number.

25395732 is an abundant number, since it is smaller than the sum of its proper divisors (38799126).

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

25395732 is a wasteful number, since it uses less digits than its factorization.

25395732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705447 (or 705442 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 25395732 is about 5039.4178235189. The cubic root of 25395732 is about 293.9365405169.

The spelling of 25395732 in words is "twenty-five million, three hundred ninety-five thousand, seven hundred thirty-two".