25000252639 has 2 divisors, whose sum is σ = 25000252640. Its totient is φ = 25000252638.

The previous prime is 25000252631. The next prime is 25000252679. The reversal of 25000252639 is 93625200052.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25000252639 - 2³ = 25000252631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25000252631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500126319 + 12500126320.

It is an arithmetic number, because the mean of its divisors is an integer number (12500126320).

Almost surely, 2^25000252639 is an apocalyptic number.

25000252639 is a deficient number, since it is larger than the sum of its proper divisors (1).

25000252639 is an equidigital number, since it uses as much as digits as its factorization.

25000252639 is an evil number, because the sum of its binary digits is even.

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

The spelling of 25000252639 in words is "twenty-five billion, two hundred fifty-two thousand, six hundred thirty-nine".