25228847 has 4 divisors (see below), whose sum is σ = 28832976. Its totient is φ = 21624720.

The previous prime is 25228843. The next prime is 25228849. The reversal of 25228847 is 74882252.

It is a happy number.

25228847 is nontrivially palindromic in base 15.

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

It is a cyclic number.

It is not a de Polignac number, because 25228847 - 2² = 25228843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25228847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25228843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1802054 + ... + 1802067.

It is an arithmetic number, because the mean of its divisors is an integer number (7208244).

Almost surely, 2^25228847 is an apocalyptic number.

25228847 is a deficient number, since it is larger than the sum of its proper divisors (3604129).

25228847 is an equidigital number, since it uses as much as digits as its factorization.

25228847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604128.

The product of its digits is 71680, while the sum is 38.

The square root of 25228847 is about 5022.8325673867. The cubic root of 25228847 is about 293.2912687902.

The spelling of 25228847 in words is "twenty-five million, two hundred twenty-eight thousand, eight hundred forty-seven".