25710891420 has 48 divisors (see below), whose sum is σ = 72043388928. Its totient is φ = 6851200320.

The previous prime is 25710891413. The next prime is 25710891449. The reversal of 25710891420 is 2419801752.

It is a super-2 number, since 2×25710891420² (a number of 22 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, 74716 + ... + 238755.

It is an arithmetic number, because the mean of its divisors is an integer number (1500903936).

Almost surely, 2^25710891420 is an apocalyptic number.

25710891420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25710891420 is an abundant number, since it is smaller than the sum of its proper divisors (46332497508).

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

25710891420 is a wasteful number, since it uses less digits than its factorization.

25710891420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314850 (or 314848 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 25710891420 in words is "twenty-five billion, seven hundred ten million, eight hundred ninety-one thousand, four hundred twenty".