25206228 has 30 divisors (see below), whose sum is σ = 65894906. Its totient is φ = 8401968.

The previous prime is 25206197. The next prime is 25206277. The reversal of 25206228 is 82260252.

It can be written as a sum of positive squares in only one way, i.e., 23794884 + 1411344 = 4878^2 + 1188^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38575 + ... + 39222.

Almost surely, 2^25206228 is an apocalyptic number.

It is an amenable number.

25206228 is an abundant number, since it is smaller than the sum of its proper divisors (40688678).

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

25206228 is a wasteful number, since it uses less digits than its factorization.

25206228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77813 (or 77802 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 25206228 is about 5020.5804445303. The cubic root of 25206228 is about 293.2035921879.

The spelling of 25206228 in words is "twenty-five million, two hundred six thousand, two hundred twenty-eight".