25224740 has 24 divisors (see below), whose sum is σ = 53394432. Its totient is φ = 10009440.

The previous prime is 25224733. The next prime is 25224743. The reversal of 25224740 is 4742252.

It is not an unprimeable number, because it can be changed into a prime (25224743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2426 + ... + 7505.

It is an arithmetic number, because the mean of its divisors is an integer number (2224768).

Almost surely, 2^25224740 is an apocalyptic number.

25224740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25224740 is an abundant number, since it is smaller than the sum of its proper divisors (28169692).

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

25224740 is a wasteful number, since it uses less digits than its factorization.

25224740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067 (or 10065 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 25224740 is about 5022.4237176885. The cubic root of 25224740 is about 293.2753529802.

Adding to 25224740 its reverse (4742252), we get a palindrome (29966992).

The spelling of 25224740 in words is "twenty-five million, two hundred twenty-four thousand, seven hundred forty".