24642225 has 60 divisors (see below), whose sum is σ = 46872496. Its totient is φ = 12791520.

The previous prime is 24642209. The next prime is 24642229. The reversal of 24642225 is 52224642.

It is a happy number.

It is not a de Polignac number, because 24642225 - 2⁴ = 24642209 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24642229) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 86934 + ... + 87216.

Almost surely, 2^24642225 is an apocalyptic number.

24642225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

24642225 is a deficient number, since it is larger than the sum of its proper divisors (22230271).

24642225 is a wasteful number, since it uses less digits than its factorization.

24642225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 334 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 24642225 is about 4964.0935728489. The cubic root of 24642225 is about 291.0002125623. Note that the first 3 decimals are identical.

Adding to 24642225 its reverse (52224642), we get a palindrome (76866867).

The spelling of 24642225 in words is "twenty-four million, six hundred forty-two thousand, two hundred twenty-five".