25787401420 has 36 divisors (see below), whose sum is σ = 59524147872. Its totient is φ = 9377236000.

The previous prime is 25787401397. The next prime is 25787401421. The reversal of 25787401420 is 2410478752.

It is not an unprimeable number, because it can be changed into a prime (25787401421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5325556 + ... + 5330395.

It is an arithmetic number, because the mean of its divisors is an integer number (1653448552).

Almost surely, 2^25787401420 is an apocalyptic number.

25787401420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25787401420 is an abundant number, since it is smaller than the sum of its proper divisors (33736746452).

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

25787401420 is a wasteful number, since it uses less digits than its factorization.

25787401420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10655982 (or 10655969 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 25787401420 in words is "twenty-five billion, seven hundred eighty-seven million, four hundred one thousand, four hundred twenty".