25145228 has 12 divisors (see below), whose sum is σ = 44063040. Its totient is φ = 12555792.

The previous prime is 25145221. The next prime is 25145273. The reversal of 25145228 is 82254152.

It is a self number, because there is not a number n which added to its sum of digits gives 25145228.

It is not an unprimeable number, because it can be changed into a prime (25145221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476 + ... + 7107.

It is an arithmetic number, because the mean of its divisors is an integer number (3671920).

Almost surely, 2^25145228 is an apocalyptic number.

It is an amenable number.

25145228 is a deficient number, since it is larger than the sum of its proper divisors (18917812).

25145228 is a wasteful number, since it uses less digits than its factorization.

25145228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8416 (or 8414 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 25145228 is about 5014.5017698671. The cubic root of 25145228 is about 292.9668799708.

The spelling of 25145228 in words is "twenty-five million, one hundred forty-five thousand, two hundred twenty-eight".