25216324559 has 2 divisors, whose sum is σ = 25216324560. Its totient is φ = 25216324558.

The previous prime is 25216324501. The next prime is 25216324603. The reversal of 25216324559 is 95542361252.

It is a happy number.

It is an a-pointer prime, because the next prime (25216324603) can be obtained adding 25216324559 to its sum of digits (44).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25216324559 - 2⁸ = 25216324303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25216314559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12608162279 + 12608162280.

It is an arithmetic number, because the mean of its divisors is an integer number (12608162280).

Almost surely, 2^25216324559 is an apocalyptic number.

25216324559 is a deficient number, since it is larger than the sum of its proper divisors (1).

25216324559 is an equidigital number, since it uses as much as digits as its factorization.

25216324559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 44.

The spelling of 25216324559 in words is "twenty-five billion, two hundred sixteen million, three hundred twenty-four thousand, five hundred fifty-nine".