25242424 has 8 divisors (see below), whose sum is σ = 47329560. Its totient is φ = 12621208.

The previous prime is 25242389. The next prime is 25242439. The reversal of 25242424 is 42424252.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1577644 + ... + 1577659.

It is an arithmetic number, because the mean of its divisors is an integer number (5916195).

Almost surely, 2^25242424 is an apocalyptic number.

It is an amenable number.

25242424 is a deficient number, since it is larger than the sum of its proper divisors (22087136).

25242424 is a wasteful number, since it uses less digits than its factorization.

25242424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155309 (or 3155305 counting only the distinct ones).

The product of its digits is 5120, while the sum is 25.

The square root of 25242424 is about 5024.1839138312. The cubic root of 25242424 is about 293.3438712927.

Adding to 25242424 its reverse (42424252), we get a palindrome (67666676).

The spelling of 25242424 in words is "twenty-five million, two hundred forty-two thousand, four hundred twenty-four".