24157225 has 9 divisors (see below), whose sum is σ = 29985463. Its totient is φ = 19306120.

The previous prime is 24157223. The next prime is 24157247. The reversal of 24157225 is 52275142.

The square root of 24157225 is 4915.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8696601 + 15460624 = 2949^2 + 3932^2 .

It is not a de Polignac number, because 24157225 - 2¹ = 24157223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24157193 and 24157202.

It is not an unprimeable number, because it can be changed into a prime (24157223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24084 + ... + 25066.

Almost surely, 2^24157225 is an apocalyptic number.

24157225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

24157225 is the 4915-th square number.

24157225 is the 2458-th centered octagonal number.

It is an amenable number.

24157225 is a deficient number, since it is larger than the sum of its proper divisors (5828238).

24157225 is an frugal number, since it uses more digits than its factorization.

24157225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 988 counting only the distinct ones).

The product of its digits is 5600, while the sum is 28.

The cubic root of 24157225 is about 289.0784260522.

The spelling of 24157225 in words is "twenty-four million, one hundred fifty-seven thousand, two hundred twenty-five".