25661455416652 has 48 divisors (see below), whose sum is σ = 50748504861600. Its totient is φ = 11246715970560.

The previous prime is 25661455416629. The next prime is 25661455416683.

25661455416652 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12782877 + ... + 14653492.

It is an arithmetic number, because the mean of its divisors is an integer number (1057260517950).

Almost surely, 2^{25661455416652} is an apocalyptic number.

25661455416652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25661455416652 is a deficient number, since it is larger than the sum of its proper divisors (25087049444948).

25661455416652 is a wasteful number, since it uses less digits than its factorization.

25661455416652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27437146 (or 27437144 counting only the distinct ones).

The product of its digits is 51840000, while the sum is 58.

The spelling of 25661455416652 in words is "twenty-five trillion, six hundred sixty-one billion, four hundred fifty-five million, four hundred sixteen thousand, six hundred fifty-two".