25440232 has 8 divisors (see below), whose sum is σ = 47700450. Its totient is φ = 12720112.

The previous prime is 25440229. The next prime is 25440241. The reversal of 25440232 is 23204452.

It can be written as a sum of positive squares in only one way, i.e., 22221796 + 3218436 = 4714^2 + 1794^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1590007 + ... + 1590022.

Almost surely, 2^25440232 is an apocalyptic number.

It is an amenable number.

25440232 is a deficient number, since it is larger than the sum of its proper divisors (22260218).

25440232 is a wasteful number, since it uses less digits than its factorization.

25440232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180035 (or 3180031 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 25440232 is about 5043.8310836109. The cubic root of 25440232 is about 294.1081250376.

Adding to 25440232 its reverse (23204452), we get a palindrome (48644684).

It can be divided in two parts, 2544023 and 2, that added together give a square (2544025 = 1595²).

The spelling of 25440232 in words is "twenty-five million, four hundred forty thousand, two hundred thirty-two".