25032247 has 4 divisors (see below), whose sum is σ = 25564896. Its totient is φ = 24499600.

The previous prime is 25032223. The next prime is 25032277. The reversal of 25032247 is 74223052.

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-25032247 is a prime.

It is a super-2 number, since 2×25032247² = 1253226779738018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25032277) 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, 266254 + ... + 266347.

It is an arithmetic number, because the mean of its divisors is an integer number (6391224).

Almost surely, 2^25032247 is an apocalyptic number.

25032247 is a deficient number, since it is larger than the sum of its proper divisors (532649).

25032247 is an equidigital number, since it uses as much as digits as its factorization.

25032247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532648.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 25032247 is about 5003.2236608011. The cubic root of 25032247 is about 292.5274408716.

Adding to 25032247 its reverse (74223052), we get a palindrome (99255299).

The spelling of 25032247 in words is "twenty-five million, thirty-two thousand, two hundred forty-seven".