909798125 has 10 divisors (see below), whose sum is σ = 1136884518. Its totient is φ = 727838000.

The previous prime is 909798107. The next prime is 909798157. The reversal of 909798125 is 521897909.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 512433769 + 397364356 = 22637^2 + 19934^2 .

It is not a de Polignac number, because 909798125 - 2⁸ = 909797869 is a prime.

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 9 ways as a sum of consecutive naturals, for example, 727214 + ... + 728463.

Almost surely, 2^909798125 is an apocalyptic number.

It is an amenable number.

909798125 is a deficient number, since it is larger than the sum of its proper divisors (227086393).

909798125 is an equidigital number, since it uses as much as digits as its factorization.

909798125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455697 (or 1455682 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 50.

The square root of 909798125 is about 30162.8600268608. The cubic root of 909798125 is about 968.9804446576.

The spelling of 909798125 in words is "nine hundred nine million, seven hundred ninety-eight thousand, one hundred twenty-five".