25515010559 has 2 divisors, whose sum is σ = 25515010560. Its totient is φ = 25515010558.

The previous prime is 25515010537. The next prime is 25515010639. The reversal of 25515010559 is 95501051552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25515010559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25515012559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12757505279 + 12757505280.

It is an arithmetic number, because the mean of its divisors is an integer number (12757505280).

Almost surely, 2^25515010559 is an apocalyptic number.

25515010559 is a deficient number, since it is larger than the sum of its proper divisors (1).

25515010559 is an equidigital number, since it uses as much as digits as its factorization.

25515010559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56250, while the sum is 38.

The spelling of 25515010559 in words is "twenty-five billion, five hundred fifteen million, ten thousand, five hundred fifty-nine".