25044352139 has 2 divisors, whose sum is σ = 25044352140. Its totient is φ = 25044352138.

The previous prime is 25044352133. The next prime is 25044352147. The reversal of 25044352139 is 93125344052.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25044352139 - 2⁸ = 25044351883 is a prime.

It is not a weakly prime, because it can be changed into another prime (25044352133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12522176069 + 12522176070.

It is an arithmetic number, because the mean of its divisors is an integer number (12522176070).

Almost surely, 2^25044352139 is an apocalyptic number.

25044352139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25044352139 is an equidigital number, since it uses as much as digits as its factorization.

25044352139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 25044352139 in words is "twenty-five billion, forty-four million, three hundred fifty-two thousand, one hundred thirty-nine".