25705559936 has 48 divisors (see below), whose sum is σ = 59571174240. Its totient is φ = 11016665856.

The previous prime is 25705559923. The next prime is 25705559953. The reversal of 25705559936 is 63995550752.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2042960 + ... + 2055503.

It is an arithmetic number, because the mean of its divisors is an integer number (1241066130).

Almost surely, 2^25705559936 is an apocalyptic number.

It is an amenable number.

25705559936 is an abundant number, since it is smaller than the sum of its proper divisors (33865614304).

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

25705559936 is an equidigital number, since it uses as much as digits as its factorization.

25705559936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4098491 (or 4098472 counting only the distinct ones).

The product of its (nonzero) digits is 12757500, while the sum is 56.

The spelling of 25705559936 in words is "twenty-five billion, seven hundred five million, five hundred fifty-nine thousand, nine hundred thirty-six".