1098875825 has 6 divisors (see below), whose sum is σ = 1362606054. Its totient is φ = 879100640.

The previous prime is 1098875821. The next prime is 1098875831. The reversal of 1098875825 is 5285788901.

It can be written as a sum of positive squares in 3 ways, for example, as 370793536 + 728082289 = 19256^2 + 26983^2 .

It is not a de Polignac number, because 1098875825 - 2² = 1098875821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098875821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21977492 + ... + 21977541.

It is an arithmetic number, because the mean of its divisors is an integer number (227101009).

Almost surely, 2^1098875825 is an apocalyptic number.

It is an amenable number.

1098875825 is a deficient number, since it is larger than the sum of its proper divisors (263730229).

1098875825 is an equidigital number, since it uses as much as digits as its factorization.

1098875825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43955043 (or 43955038 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 53.

The square root of 1098875825 is about 33149.2959955411. The cubic root of 1098875825 is about 1031.9283399879.

The spelling of 1098875825 in words is "one billion, ninety-eight million, eight hundred seventy-five thousand, eight hundred twenty-five".