25222912 has 108 divisors (see below), whose sum is σ = 60596424. Its totient is φ = 10383360.

The previous prime is 25222907. The next prime is 25222921. The reversal of 25222912 is 21922252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475878 + ... + 475930.

It is an arithmetic number, because the mean of its divisors is an integer number (561078).

Almost surely, 2^25222912 is an apocalyptic number.

25222912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25222912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30298212).

25222912 is an abundant number, since it is smaller than the sum of its proper divisors (35373512).

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

25222912 is a wasteful number, since it uses less digits than its factorization.

25222912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 79 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 25222912 is about 5022.2417305422. The cubic root of 25222912 is about 293.2682683971.

It can be divided in two parts, 2 and 5222912, that multiplied together give a square (10445824 = 3232²).

The spelling of 25222912 in words is "twenty-five million, two hundred twenty-two thousand, nine hundred twelve".