25112440 has 16 divisors (see below), whose sum is σ = 56503080. Its totient is φ = 10044960.

The previous prime is 25112431. The next prime is 25112443. The reversal of 25112440 is 4421152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25112443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313866 + ... + 313945.

Almost surely, 2^25112440 is an apocalyptic number.

25112440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25112440 is an abundant number, since it is smaller than the sum of its proper divisors (31390640).

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

25112440 is a wasteful number, since it uses less digits than its factorization.

25112440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627822 (or 627818 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 25112440 is about 5011.2313855978. The cubic root of 25112440 is about 292.8394869954.

Adding to 25112440 its reverse (4421152), we get a palindrome (29533592).

It can be divided in two parts, 25112 and 440, that added together give a palindrome (25552).

The spelling of 25112440 in words is "twenty-five million, one hundred twelve thousand, four hundred forty".