25234247 has 4 divisors (see below), whose sum is σ = 25274256. Its totient is φ = 25194240.

The previous prime is 25234219. The next prime is 25234267. The reversal of 25234247 is 74243252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25234247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25234207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19043 + ... + 20324.

It is an arithmetic number, because the mean of its divisors is an integer number (6318564).

Almost surely, 2^25234247 is an apocalyptic number.

25234247 is a deficient number, since it is larger than the sum of its proper divisors (40009).

25234247 is an equidigital number, since it uses as much as digits as its factorization.

25234247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40008.

The product of its digits is 13440, while the sum is 29.

The square root of 25234247 is about 5023.3700839178. The cubic root of 25234247 is about 293.3121927200.

Adding to 25234247 its reverse (74243252), we get a palindrome (99477499).

The spelling of 25234247 in words is "twenty-five million, two hundred thirty-four thousand, two hundred forty-seven".