25538683552 has 24 divisors (see below), whose sum is σ = 50767438176. Its totient is φ = 12645365952.

The previous prime is 25538683501. The next prime is 25538683591.

25538683552 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25538683552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3870898 + ... + 3877489.

It is an arithmetic number, because the mean of its divisors is an integer number (2115309924).

Almost surely, 2^25538683552 is an apocalyptic number.

It is an amenable number.

25538683552 is a deficient number, since it is larger than the sum of its proper divisors (25228754624).

25538683552 is a wasteful number, since it uses less digits than its factorization.

25538683552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7748500 (or 7748492 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 52.

The spelling of 25538683552 in words is "twenty-five billion, five hundred thirty-eight million, six hundred eighty-three thousand, five hundred fifty-two".