25898197706836 has 48 divisors (see below), whose sum is σ = 55792355852800. Its totient is φ = 10243306137600.

The previous prime is 25898197706809. The next prime is 25898197706851. The reversal of 25898197706836 is 63860779189852.

It is a happy number.

It is a super-2 number, since 2×25898197706836² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5662236 + ... + 9157363.

Almost surely, 2^{25898197706836} is an apocalyptic number.

25898197706836 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25898197706836 is an abundant number, since it is smaller than the sum of its proper divisors (29894158145964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25898197706836 is a wasteful number, since it uses less digits than its factorization.

25898197706836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14824424 (or 14824422 counting only the distinct ones).

The product of its (nonzero) digits is 2194698240, while the sum is 79.

The spelling of 25898197706836 in words is "twenty-five trillion, eight hundred ninety-eight billion, one hundred ninety-seven million, seven hundred six thousand, eight hundred thirty-six".