25647744774652 has 72 divisors (see below), whose sum is σ = 61339361695920. Its totient is φ = 9223964144640.

The previous prime is 25647744774647. The next prime is 25647744774671.

25647744774652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×25647744774652² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 457509877 + ... + 457565932.

It is an arithmetic number, because the mean of its divisors is an integer number (851935579110).

Almost surely, 2^{25647744774652} is an apocalyptic number.

25647744774652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25647744774652 is an abundant number, since it is smaller than the sum of its proper divisors (35691616921268).

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

25647744774652 is a wasteful number, since it uses less digits than its factorization.

25647744774652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915075851 (or 915075842 counting only the distinct ones).

The product of its digits is 2212761600, while the sum is 70.

The spelling of 25647744774652 in words is "twenty-five trillion, six hundred forty-seven billion, seven hundred forty-four million, seven hundred seventy-four thousand, six hundred fifty-two".