406619925 has 12 divisors (see below), whose sum is σ = 672278400. Its totient is φ = 216863920.

The previous prime is 406619909. The next prime is 406619947. The reversal of 406619925 is 529916604.

It is a happy number.

It is not a de Polignac number, because 406619925 - 2⁴ = 406619909 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2710725 + ... + 2710874.

It is an arithmetic number, because the mean of its divisors is an integer number (56023200).

Almost surely, 2^406619925 is an apocalyptic number.

It is an amenable number.

406619925 is a deficient number, since it is larger than the sum of its proper divisors (265658475).

406619925 is a wasteful number, since it uses less digits than its factorization.

406619925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5421612 (or 5421607 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 406619925 is about 20164.8189924928. The cubic root of 406619925 is about 740.8487491817.

The spelling of 406619925 in words is "four hundred six million, six hundred nineteen thousand, nine hundred twenty-five".