25320243 has 16 divisors (see below), whose sum is σ = 36481536. Its totient is φ = 15528480.

The previous prime is 25320241. The next prime is 25320283. The reversal of 25320243 is 34202352.

It is not a de Polignac number, because 25320243 - 2¹ = 25320241 is a prime.

It is a super-2 number, since 2×25320243² = 1282229411158098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25320241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12598 + ... + 14468.

It is an arithmetic number, because the mean of its divisors is an integer number (2280096).

Almost surely, 2^25320243 is an apocalyptic number.

25320243 is a deficient number, since it is larger than the sum of its proper divisors (11161293).

25320243 is a wasteful number, since it uses less digits than its factorization.

25320243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 25320243 is about 5031.9223960630. The cubic root of 25320243 is about 293.6450086233.

Adding to 25320243 its reverse (34202352), we get a palindrome (59522595).

The spelling of 25320243 in words is "twenty-five million, three hundred twenty thousand, two hundred forty-three".