25243264 has 48 divisors (see below), whose sum is σ = 52091910. Its totient is φ = 12180480.

The previous prime is 25243261. The next prime is 25243271. The reversal of 25243264 is 46234252.

It can be written as a sum of positive squares in 3 ways, for example, as 10188864 + 15054400 = 3192^2 + 3880^2 .

It is not an unprimeable number, because it can be changed into a prime (25243261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413794 + ... + 413854.

Almost surely, 2^25243264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25243264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26045955).

25243264 is an abundant number, since it is smaller than the sum of its proper divisors (26848646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25243264 is an frugal number, since it uses more digits than its factorization.

25243264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 116 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 25243264 is about 5024.2675088017. The cubic root of 25243264 is about 293.3471251550.

The spelling of 25243264 in words is "twenty-five million, two hundred forty-three thousand, two hundred sixty-four".