25286628 has 24 divisors (see below), whose sum is σ = 59220000. Its totient is φ = 8397760.

The previous prime is 25286617. The next prime is 25286693. The reversal of 25286628 is 82668252.

It is a super-2 number, since 2×25286628² = 1278827111220768, which contains 22 as substring.

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, 378 + ... + 7121.

It is an arithmetic number, because the mean of its divisors is an integer number (2467500).

Almost surely, 2^25286628 is an apocalyptic number.

It is an amenable number.

25286628 is an abundant number, since it is smaller than the sum of its proper divisors (33933372).

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

25286628 is a wasteful number, since it uses less digits than its factorization.

25286628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7787 (or 7785 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 25286628 is about 5028.5811120037. The cubic root of 25286628 is about 293.5150039684.

The spelling of 25286628 in words is "twenty-five million, two hundred eighty-six thousand, six hundred twenty-eight".