409238625 has 48 divisors (see below), whose sum is σ = 718937856. Its totient is φ = 206704800.

The previous prime is 409238623. The next prime is 409238717. The reversal of 409238625 is 526832904.

It is a happy number.

It is not a de Polignac number, because 409238625 - 2¹ = 409238623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (409238623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133864 + ... + 136886.

It is an arithmetic number, because the mean of its divisors is an integer number (14977872).

Almost surely, 2^409238625 is an apocalyptic number.

It is an amenable number.

409238625 is a deficient number, since it is larger than the sum of its proper divisors (309699231).

409238625 is a wasteful number, since it uses less digits than its factorization.

409238625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079 (or 3050 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 409238625 is about 20229.6471793257. The cubic root of 409238625 is about 742.4357436260.

The spelling of 409238625 in words is "four hundred nine million, two hundred thirty-eight thousand, six hundred twenty-five".