25015324897 has 2 divisors, whose sum is σ = 25015324898. Its totient is φ = 25015324896.

The previous prime is 25015324871. The next prime is 25015324921. The reversal of 25015324897 is 79842351052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24161282721 + 854042176 = 155439^2 + 29224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25015324897 is a prime.

It is not a weakly prime, because it can be changed into another prime (25015624897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12507662448 + 12507662449.

It is an arithmetic number, because the mean of its divisors is an integer number (12507662449).

Almost surely, 2^25015324897 is an apocalyptic number.

It is an amenable number.

25015324897 is a deficient number, since it is larger than the sum of its proper divisors (1).

25015324897 is an equidigital number, since it uses as much as digits as its factorization.

25015324897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 25015324897 in words is "twenty-five billion, fifteen million, three hundred twenty-four thousand, eight hundred ninety-seven".