25897375593855 has 24 divisors (see below), whose sum is σ = 46336809667200. Its totient is φ = 13366387402560.

The previous prime is 25897375593851. The next prime is 25897375593931. The reversal of 25897375593855 is 55839557379852.

25897375593855 is a `hidden beast` number, since 2 + 5 + 8 + 9 + 7 + 3 + 7 + 559 + 3 + 8 + 55 = 666.

It is not a de Polignac number, because 25897375593855 - 2² = 25897375593851 is a prime.

It is a super-2 number, since 2×25897375593855² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25897375593851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9282212080 + ... + 9282214869.

It is an arithmetic number, because the mean of its divisors is an integer number (1930700402800).

Almost surely, 2^{25897375593855} is an apocalyptic number.

25897375593855 is a deficient number, since it is larger than the sum of its proper divisors (20439434073345).

25897375593855 is a wasteful number, since it uses less digits than its factorization.

25897375593855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18564426991 (or 18564426988 counting only the distinct ones).

The product of its digits is 14288400000, while the sum is 81.

The spelling of 25897375593855 in words is "twenty-five trillion, eight hundred ninety-seven billion, three hundred seventy-five million, five hundred ninety-three thousand, eight hundred fifty-five".