25252639 has 2 divisors, whose sum is σ = 25252640. Its totient is φ = 25252638.

The previous prime is 25252609. The next prime is 25252663. The reversal of 25252639 is 93625252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25252639 - 2¹¹ = 25250591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25252609) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12626319 + 12626320.

It is an arithmetic number, because the mean of its divisors is an integer number (12626320).

Almost surely, 2^25252639 is an apocalyptic number.

25252639 is a deficient number, since it is larger than the sum of its proper divisors (1).

25252639 is an equidigital number, since it uses as much as digits as its factorization.

25252639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 34.

The square root of 25252639 is about 5025.2003940142. The cubic root of 25252639 is about 293.3834356854.

The spelling of 25252639 in words is "twenty-five million, two hundred fifty-two thousand, six hundred thirty-nine".