25222830 has 16 divisors (see below), whose sum is σ = 60534864. Its totient is φ = 6726080.

The previous prime is 25222807. The next prime is 25222877. The reversal of 25222830 is 3822252.

It is a self number, because there is not a number n which added to its sum of digits gives 25222830.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 420351 + ... + 420410.

It is an arithmetic number, because the mean of its divisors is an integer number (3783429).

Almost surely, 2^25222830 is an apocalyptic number.

25222830 is an abundant number, since it is smaller than the sum of its proper divisors (35312034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25222830 is a wasteful number, since it uses less digits than its factorization.

25222830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840771.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25222830 is about 5022.2335668505. The cubic root of 25222830 is about 293.2679505905.

The spelling of 25222830 in words is "twenty-five million, two hundred twenty-two thousand, eight hundred thirty".