25736601812 has 24 divisors (see below), whose sum is σ = 46628877960. Its totient is φ = 12414765440.

The previous prime is 25736601809. The next prime is 25736601827. The reversal of 25736601812 is 21810663752.

It can be written as a sum of positive squares in 4 ways, for example, as 3978581776 + 21758020036 = 63076^2 + 147506^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25736601812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61262 + ... + 235002.

It is an arithmetic number, because the mean of its divisors is an integer number (1942869915).

Almost surely, 2^25736601812 is an apocalyptic number.

It is an amenable number.

25736601812 is a deficient number, since it is larger than the sum of its proper divisors (20892276148).

25736601812 is a wasteful number, since it uses less digits than its factorization.

25736601812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175051 (or 175049 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 25736601812 in words is "twenty-five billion, seven hundred thirty-six million, six hundred one thousand, eight hundred twelve".