25718040420 has 192 divisors, whose sum is σ = 76045132800. Its totient is φ = 6484746240.

The previous prime is 25718040377. The next prime is 25718040437. The reversal of 25718040420 is 2404081752.

It is a super-2 number, since 2×25718040420² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35768821 + ... + 35769539.

It is an arithmetic number, because the mean of its divisors is an integer number (396068400).

Almost surely, 2^25718040420 is an apocalyptic number.

25718040420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25718040420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38022566400).

25718040420 is an abundant number, since it is smaller than the sum of its proper divisors (50327092380).

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

25718040420 is a wasteful number, since it uses less digits than its factorization.

25718040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The spelling of 25718040420 in words is "twenty-five billion, seven hundred eighteen million, forty thousand, four hundred twenty".