25700036420 has 12 divisors (see below), whose sum is σ = 53970076524. Its totient is φ = 10280014560.

The previous prime is 25700036371. The next prime is 25700036431. The reversal of 25700036420 is 2463000752.

It can be written as a sum of positive squares in 2 ways, for example, as 3845736196 + 21854300224 = 62014^2 + 147832^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642500891 + ... + 642500930.

It is an arithmetic number, because the mean of its divisors is an integer number (4497506377).

Almost surely, 2^25700036420 is an apocalyptic number.

25700036420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25700036420 is an abundant number, since it is smaller than the sum of its proper divisors (28270040104).

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

25700036420 is a wasteful number, since it uses less digits than its factorization.

25700036420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285001830 (or 1285001828 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The spelling of 25700036420 in words is "twenty-five billion, seven hundred million, thirty-six thousand, four hundred twenty".