25323311689 has 9 divisors (see below), whose sum is σ = 27423341109. Its totient is φ = 23373455040.

The previous prime is 25323311669. The next prime is 25323311711. The reversal of 25323311689 is 98611332352.

The square root of 25323311689 is 159133.

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

It can be written as a sum of positive squares in 4 ways, for example, as 9170935225 + 16152376464 = 95765^2 + 127092^2 .

It is not a de Polignac number, because 25323311689 - 2²⁵ = 25289757257 is a prime.

It is a super-2 number, since 2×25323311689² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25323311609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2062609 + ... + 2074849.

It is an arithmetic number, because the mean of its divisors is an integer number (3047037901).

Almost surely, 2^25323311689 is an apocalyptic number.

25323311689 is the 159133-rd square number.

25323311689 is the 79567-th centered octagonal number.

It is an amenable number.

25323311689 is a deficient number, since it is larger than the sum of its proper divisors (2100029420).

25323311689 is an frugal number, since it uses more digits than its factorization.

25323311689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24508 (or 12254 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The spelling of 25323311689 in words is "twenty-five billion, three hundred twenty-three million, three hundred eleven thousand, six hundred eighty-nine".