25320299 has 4 divisors (see below), whose sum is σ = 25393200. Its totient is φ = 25247400.

The previous prime is 25320289. The next prime is 25320311. The reversal of 25320299 is 99202352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25320299 - 2⁴ = 25320283 is a prime.

It is a super-2 number, since 2×25320299² = 1282235082898802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25320209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35927 + ... + 36624.

It is an arithmetic number, because the mean of its divisors is an integer number (6348300).

Almost surely, 2^25320299 is an apocalyptic number.

25320299 is a deficient number, since it is larger than the sum of its proper divisors (72901).

25320299 is an equidigital number, since it uses as much as digits as its factorization.

25320299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72900.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 25320299 is about 5031.9279605336. The cubic root of 25320299 is about 293.6452251050.

The spelling of 25320299 in words is "twenty-five million, three hundred twenty thousand, two hundred ninety-nine".