25883339689 has 3 divisors (see below), whose sum is σ = 25883500573. Its totient is φ = 25883178806.

The previous prime is 25883339617. The next prime is 25883339693. The reversal of 25883339689 is 98693338852.

It is a happy number.

The square root of 25883339689 is 160883.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 25883339689 - 2³³ = 17293405097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25883339689.

It is not an unprimeable number, because it can be changed into a prime (25883339089) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 80442 + ... + 241324.

Almost surely, 2^25883339689 is an apocalyptic number.

25883339689 is the 160883-rd square number.

25883339689 is the 80442-nd centered octagonal number.

It is an amenable number.

25883339689 is a deficient number, since it is larger than the sum of its proper divisors (160884).

25883339689 is an frugal number, since it uses more digits than its factorization.

25883339689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321766 (or 160883 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 64.

Multiplying 25883339689 by its sum of digits (64), we get a square (1656533740096 = 1287064²).

The spelling of 25883339689 in words is "twenty-five billion, eight hundred eighty-three million, three hundred thirty-nine thousand, six hundred eighty-nine".