25224345 has 64 divisors (see below), whose sum is σ = 49248000. Its totient is φ = 12192768.

The previous prime is 25224323. The next prime is 25224349. The reversal of 25224345 is 54342252.

It is a happy number.

It is not a de Polignac number, because 25224345 - 2⁵ = 25224313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25224349) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66366 + ... + 66744.

It is an arithmetic number, because the mean of its divisors is an integer number (769500).

Almost surely, 2^25224345 is an apocalyptic number.

It is an amenable number.

25224345 is a deficient number, since it is larger than the sum of its proper divisors (24023655).

25224345 is a wasteful number, since it uses less digits than its factorization.

25224345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 433 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 25224345 is about 5022.3843938910. The cubic root of 25224345 is about 293.2738221502.

Adding to 25224345 its reverse (54342252), we get a palindrome (79566597).

The spelling of 25224345 in words is "twenty-five million, two hundred twenty-four thousand, three hundred forty-five".