25220822 has 16 divisors (see below), whose sum is σ = 42278544. Its totient is φ = 11184000.

The previous prime is 25220821. The next prime is 25220851. The reversal of 25220822 is 22802252.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25220821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13079 + ... + 14882.

It is an arithmetic number, because the mean of its divisors is an integer number (2642409).

Almost surely, 2^25220822 is an apocalyptic number.

25220822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25220822 is a deficient number, since it is larger than the sum of its proper divisors (17057722).

25220822 is a wasteful number, since it uses less digits than its factorization.

25220822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28015.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 25220822 is about 5022.0336518188. The cubic root of 25220822 is about 293.2601679895.

The spelling of 25220822 in words is "twenty-five million, two hundred twenty thousand, eight hundred twenty-two".