25236289 has 4 divisors (see below), whose sum is σ = 27177556. Its totient is φ = 23295024.

The previous prime is 25236259. The next prime is 25236317. The reversal of 25236289 is 98263252.

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 14379264 + 10857025 = 3792^2 + 3295^2 .

It is a cyclic number.

It is not a de Polignac number, because 25236289 - 2¹⁷ = 25105217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25236209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970614 + ... + 970639.

It is an arithmetic number, because the mean of its divisors is an integer number (6794389).

Almost surely, 2^25236289 is an apocalyptic number.

It is an amenable number.

25236289 is a deficient number, since it is larger than the sum of its proper divisors (1941267).

25236289 is a wasteful number, since it uses less digits than its factorization.

25236289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941266.

The product of its digits is 51840, while the sum is 37.

The square root of 25236289 is about 5023.5733298122. The cubic root of 25236289 is about 293.3201042875.

The spelling of 25236289 in words is "twenty-five million, two hundred thirty-six thousand, two hundred eighty-nine".