25872247 has 2 divisors, whose sum is σ = 25872248. Its totient is φ = 25872246.

The previous prime is 25872241. The next prime is 25872257. The reversal of 25872247 is 74227852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25872247 - 2³ = 25872239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25872241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12936123 + 12936124.

It is an arithmetic number, because the mean of its divisors is an integer number (12936124).

Almost surely, 2^25872247 is an apocalyptic number.

25872247 is a deficient number, since it is larger than the sum of its proper divisors (1).

25872247 is an equidigital number, since it uses as much as digits as its factorization.

25872247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 37.

The square root of 25872247 is about 5086.4768750089. The cubic root of 25872247 is about 295.7635948731.

The spelling of 25872247 in words is "twenty-five million, eight hundred seventy-two thousand, two hundred forty-seven".