25240243 has 12 divisors (see below), whose sum is σ = 29918160. Its totient is φ = 21224112.

The previous prime is 25240207. The next prime is 25240277. The reversal of 25240243 is 34204252.

It is not a de Polignac number, because 25240243 - 2¹⁷ = 25109171 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (25240283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2263 + ... + 7456.

It is an arithmetic number, because the mean of its divisors is an integer number (2493180).

Almost surely, 2^25240243 is an apocalyptic number.

25240243 is a deficient number, since it is larger than the sum of its proper divisors (4677917).

25240243 is an equidigital number, since it uses as much as digits as its factorization.

25240243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9786 (or 9779 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 25240243 is about 5023.9668589671. The cubic root of 25240243 is about 293.3354225345.

Adding to 25240243 its reverse (34204252), we get a palindrome (59444495).

The spelling of 25240243 in words is "twenty-five million, two hundred forty thousand, two hundred forty-three".