499128025 has 18 divisors (see below), whose sum is σ = 680303246. Its totient is φ = 363000000.

The previous prime is 499128017. The next prime is 499128029. The reversal of 499128025 is 520821994.

It can be written as a sum of positive squares in 3 ways, for example, as 7744 + 499120281 = 88^2 + 22341^2 .

It is not a de Polignac number, because 499128025 - 2³ = 499128017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499128029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 79476 + ... + 85525.

Almost surely, 2^499128025 is an apocalyptic number.

It is an amenable number.

499128025 is a deficient number, since it is larger than the sum of its proper divisors (181175221).

499128025 is a wasteful number, since it uses less digits than its factorization.

499128025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165033 (or 165017 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 499128025 is about 22341.1733129664. The cubic root of 499128025 is about 793.2388661654.

The spelling of 499128025 in words is "four hundred ninety-nine million, one hundred twenty-eight thousand, twenty-five".