25390037 has 2 divisors, whose sum is σ = 25390038. Its totient is φ = 25390036.

The previous prime is 25390033. The next prime is 25390063. The reversal of 25390037 is 73009352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22146436 + 3243601 = 4706^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 25390037 - 2² = 25390033 is a prime.

It is a super-2 number, since 2×25390037² = 1289307957722738, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25389991 and 25390009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25390031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12695018 + 12695019.

It is an arithmetic number, because the mean of its divisors is an integer number (12695019).

Almost surely, 2^25390037 is an apocalyptic number.

It is an amenable number.

25390037 is a deficient number, since it is larger than the sum of its proper divisors (1).

25390037 is an equidigital number, since it uses as much as digits as its factorization.

25390037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 25390037 is about 5038.8527464096. The cubic root of 25390037 is about 293.9145670905.

Adding to 25390037 its reverse (73009352), we get a palindrome (98399389).

The spelling of 25390037 in words is "twenty-five million, three hundred ninety thousand, thirty-seven".