25296289 has 4 divisors (see below), whose sum is σ = 26784324. Its totient is φ = 23808256.

The previous prime is 25296269. The next prime is 25296301. The reversal of 25296289 is 98269252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17640000 + 7656289 = 4200^2 + 2767^2 .

It is a cyclic number.

It is not a de Polignac number, because 25296289 - 2¹⁹ = 24772001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25296259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743992 + ... + 744025.

It is an arithmetic number, because the mean of its divisors is an integer number (6696081).

Almost surely, 2^25296289 is an apocalyptic number.

It is an amenable number.

25296289 is a deficient number, since it is larger than the sum of its proper divisors (1488035).

25296289 is a wasteful number, since it uses less digits than its factorization.

25296289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488034.

The product of its digits is 155520, while the sum is 43.

The square root of 25296289 is about 5029.5416292143. The cubic root of 25296289 is about 293.5523792878.

The spelling of 25296289 in words is "twenty-five million, two hundred ninety-six thousand, two hundred eighty-nine".