25800245587 has 2 divisors, whose sum is σ = 25800245588. Its totient is φ = 25800245586.

The previous prime is 25800245567. The next prime is 25800245591. The reversal of 25800245587 is 78554200852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25800245587 - 2²⁷ = 25666027859 is a prime.

It is not a weakly prime, because it can be changed into another prime (25800245567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12900122793 + 12900122794.

It is an arithmetic number, because the mean of its divisors is an integer number (12900122794).

Almost surely, 2^25800245587 is an apocalyptic number.

25800245587 is a deficient number, since it is larger than the sum of its proper divisors (1).

25800245587 is an equidigital number, since it uses as much as digits as its factorization.

25800245587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896000, while the sum is 46.

The spelling of 25800245587 in words is "twenty-five billion, eight hundred million, two hundred forty-five thousand, five hundred eighty-seven".