25442432 has 16 divisors (see below), whose sum is σ = 50686350. Its totient is φ = 12721152.

The previous prime is 25442423. The next prime is 25442437. The reversal of 25442432 is 23424452.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24840256 + 602176 = 4984^2 + 776^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (25442437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99257 + ... + 99512.

Almost surely, 2^25442432 is an apocalyptic number.

It is an amenable number.

25442432 is a deficient number, since it is larger than the sum of its proper divisors (25243918).

25442432 is an equidigital number, since it uses as much as digits as its factorization.

25442432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198783 (or 198771 counting only the distinct ones).

The product of its digits is 7680, while the sum is 26.

The square root of 25442432 is about 5044.0491670879. The cubic root of 25442432 is about 294.1166026755.

Adding to 25442432 its reverse (23424452), we get a palindrome (48866884).

The spelling of 25442432 in words is "twenty-five million, four hundred forty-two thousand, four hundred thirty-two".