409342725 has 36 divisors (see below), whose sum is σ = 799835712. Its totient is φ = 198468000.

The previous prime is 409342723. The next prime is 409342727. The reversal of 409342725 is 527243904.

It is an interprime number because it is at equal distance from previous prime (409342723) and next prime (409342727).

It is not a de Polignac number, because 409342725 - 2¹ = 409342723 is a prime.

It is a super-2 number, since 2×409342725² = 335122933020851250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 409342725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409342723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 80221 + ... + 85170.

Almost surely, 2^409342725 is an apocalyptic number.

409342725 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

409342725 is a deficient number, since it is larger than the sum of its proper divisors (390492987).

409342725 is a wasteful number, since it uses less digits than its factorization.

409342725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165418 (or 165410 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 409342725 is about 20232.2199721138. The cubic root of 409342725 is about 742.4986906075.

The spelling of 409342725 in words is "four hundred nine million, three hundred forty-two thousand, seven hundred twenty-five".