1925817228 has 24 divisors (see below), whose sum is σ = 4992859760. Its totient is φ = 641939040.

The previous prime is 1925817227. The next prime is 1925817251. The reversal of 1925817228 is 8227185291.

It is not an unprimeable number, because it can be changed into a prime (1925817227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8915713 + ... + 8915928.

Almost surely, 2^1925817228 is an apocalyptic number.

1925817228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1925817228 is an abundant number, since it is smaller than the sum of its proper divisors (3067042532).

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

1925817228 is a wasteful number, since it uses less digits than its factorization.

1925817228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17831654 (or 17831646 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 1925817228 is about 43884.1341261281. The cubic root of 1925817228 is about 1244.1469784603.

It can be divided in two parts, 192581 and 7228, that added together give a square (199809 = 447²).

The spelling of 1925817228 in words is "one billion, nine hundred twenty-five million, eight hundred seventeen thousand, two hundred twenty-eight".