25103312539 has 2 divisors, whose sum is σ = 25103312540. Its totient is φ = 25103312538.

The previous prime is 25103312513. The next prime is 25103312557. The reversal of 25103312539 is 93521330152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25103312539 is a prime.

It is not a weakly prime, because it can be changed into another prime (25103112539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12551656269 + 12551656270.

It is an arithmetic number, because the mean of its divisors is an integer number (12551656270).

Almost surely, 2^25103312539 is an apocalyptic number.

25103312539 is a deficient number, since it is larger than the sum of its proper divisors (1).

25103312539 is an equidigital number, since it uses as much as digits as its factorization.

25103312539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 34.

The spelling of 25103312539 in words is "twenty-five billion, one hundred three million, three hundred twelve thousand, five hundred thirty-nine".