1098228925 has 12 divisors (see below), whose sum is σ = 1364433876. Its totient is φ = 876886400.

The previous prime is 1098228919. The next prime is 1098228941. The reversal of 1098228925 is 5298228901.

It can be written as a sum of positive squares in 6 ways, for example, as 155800324 + 942428601 = 12482^2 + 30699^2 .

It is not a de Polignac number, because 1098228925 - 2⁵ = 1098228893 is a prime.

It is a super-2 number, since 2×1098228925² = 2412213543413311250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29134 + ... + 55183.

It is an arithmetic number, because the mean of its divisors is an integer number (113702823).

Almost surely, 2^1098228925 is an apocalyptic number.

It is an amenable number.

1098228925 is a deficient number, since it is larger than the sum of its proper divisors (266204951).

1098228925 is an equidigital number, since it uses as much as digits as its factorization.

1098228925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84848 (or 84843 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 1098228925 is about 33139.5371874744. The cubic root of 1098228925 is about 1031.7258040673.

The spelling of 1098228925 in words is "one billion, ninety-eight million, two hundred twenty-eight thousand, nine hundred twenty-five".