25634633643652 has 24 divisors (see below), whose sum is σ = 49067972321760. Its totient is φ = 11621361850560.

The previous prime is 25634633643557. The next prime is 25634633643673.

25634633643652 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 768591913 + ... + 768625264.

It is an arithmetic number, because the mean of its divisors is an integer number (2044498846740).

Almost surely, 2^{25634633643652} is an apocalyptic number.

25634633643652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25634633643652 is a deficient number, since it is larger than the sum of its proper divisors (23433338678108).

25634633643652 is a wasteful number, since it uses less digits than its factorization.

25634633643652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537217571 (or 1537217569 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 58.

The spelling of 25634633643652 in words is "twenty-five trillion, six hundred thirty-four billion, six hundred thirty-three million, six hundred forty-three thousand, six hundred fifty-two".