25222628 has 24 divisors (see below), whose sum is σ = 48771072. Its totient is φ = 11352704.

The previous prime is 25222583. The next prime is 25222643. The reversal of 25222628 is 82622252.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 25222628.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6500 + ... + 9627.

It is an arithmetic number, because the mean of its divisors is an integer number (2032128).

Almost surely, 2^25222628 is an apocalyptic number.

It is an amenable number.

25222628 is a deficient number, since it is larger than the sum of its proper divisors (23548444).

25222628 is a wasteful number, since it uses less digits than its factorization.

25222628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16171 (or 16169 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 25222628 is about 5022.2134562362. The cubic root of 25222628 is about 293.2671676982.

The spelling of 25222628 in words is "twenty-five million, two hundred twenty-two thousand, six hundred twenty-eight".