25222716 has 72 divisors (see below), whose sum is σ = 66777984. Its totient is φ = 8017920.

The previous prime is 25222699. The next prime is 25222723. The reversal of 25222716 is 61722252.

It is a self number, because there is not a number n which added to its sum of digits gives 25222716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108136 + ... + 108368.

It is an arithmetic number, because the mean of its divisors is an integer number (927472).

Almost surely, 2^25222716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25222716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33388992).

25222716 is an abundant number, since it is smaller than the sum of its proper divisors (41555268).

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

25222716 is a wasteful number, since it uses less digits than its factorization.

25222716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 366 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 25222716 is about 5022.2222173058. Note that the first 4 decimals coincide. The cubic root of 25222716 is about 293.2675087607.

Adding to 25222716 its reverse (61722252), we get a palindrome (86944968).

The spelling of 25222716 in words is "twenty-five million, two hundred twenty-two thousand, seven hundred sixteen".