25749721483632 has 60 divisors (see below), whose sum is σ = 75196650429264. Its totient is φ = 8210056124160.

The previous prime is 25749721483613. The next prime is 25749721483669. The reversal of 25749721483632 is 23638412794752.

It is a happy number.

25749721483632 is a `hidden beast` number, since 2 + 5 + 7 + 4 + 97 + 2 + 1 + 483 + 63 + 2 = 666.

It is a super-2 number, since 2×25749721483632² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25749721483632.

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 11 ways as a sum of consecutive naturals, for example, 3887333869 + ... + 3887340492.

Almost surely, 2^{25749721483632} is an apocalyptic number.

It is an amenable number.

25749721483632 is an abundant number, since it is smaller than the sum of its proper divisors (49446928945632).

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

25749721483632 is a wasteful number, since it uses less digits than its factorization.

25749721483632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7774674398 (or 7774674389 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 63.

The spelling of 25749721483632 in words is "twenty-five trillion, seven hundred forty-nine billion, seven hundred twenty-one million, four hundred eighty-three thousand, six hundred thirty-two".