25339668513 has 16 divisors (see below), whose sum is σ = 34772855040. Its totient is φ = 16406697104.

The previous prime is 25339668499. The next prime is 25339668533. The reversal of 25339668513 is 31586693352.

It is a cyclic number.

It is not a de Polignac number, because 25339668513 - 2¹² = 25339664417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25339668533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847731 + ... + 877112.

It is an arithmetic number, because the mean of its divisors is an integer number (2173303440).

Almost surely, 2^25339668513 is an apocalyptic number.

It is an amenable number.

25339668513 is a deficient number, since it is larger than the sum of its proper divisors (9433186527).

25339668513 is a wasteful number, since it uses less digits than its factorization.

25339668513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724988.

The product of its digits is 3499200, while the sum is 51.

The spelling of 25339668513 in words is "twenty-five billion, three hundred thirty-nine million, six hundred sixty-eight thousand, five hundred thirteen".