406656925 has 12 divisors (see below), whose sum is σ = 514984896. Its totient is φ = 318402800.

The previous prime is 406656917. The next prime is 406656953. The reversal of 406656925 is 529656604.

It is not a de Polignac number, because 406656925 - 2³ = 406656917 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 11 ways as a sum of consecutive naturals, for example, 171871 + ... + 174220.

It is an arithmetic number, because the mean of its divisors is an integer number (42915408).

Almost surely, 2^406656925 is an apocalyptic number.

It is an amenable number.

406656925 is a deficient number, since it is larger than the sum of its proper divisors (108327971).

406656925 is a wasteful number, since it uses less digits than its factorization.

406656925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346148 (or 346143 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 406656925 is about 20165.7364110513. The cubic root of 406656925 is about 740.8712194466.

The spelling of 406656925 in words is "four hundred six million, six hundred fifty-six thousand, nine hundred twenty-five".