406655725 has 24 divisors (see below), whose sum is σ = 610193088. Its totient is φ = 262444800.

The previous prime is 406655653. The next prime is 406655729. The reversal of 406655725 is 527556604.

It is not a de Polignac number, because 406655725 - 2⁹ = 406655213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406655729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65371 + ... + 71320.

It is an arithmetic number, because the mean of its divisors is an integer number (25424712).

Almost surely, 2^406655725 is an apocalyptic number.

It is an amenable number.

406655725 is a deficient number, since it is larger than the sum of its proper divisors (203537363).

406655725 is a wasteful number, since it uses less digits than its factorization.

406655725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136725 (or 136720 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 406655725 is about 20165.7066575908. The cubic root of 406655725 is about 740.8704907027.

The spelling of 406655725 in words is "four hundred six million, six hundred fifty-five thousand, seven hundred twenty-five".