406625385 has 16 divisors (see below), whose sum is σ = 673035840. Its totient is φ = 209388480.

The previous prime is 406625353. The next prime is 406625389. The reversal of 406625385 is 583526604.

It is not a de Polignac number, because 406625385 - 2⁵ = 406625353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406625389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466951 + ... + 467820.

It is an arithmetic number, because the mean of its divisors is an integer number (42064740).

Almost surely, 2^406625385 is an apocalyptic number.

It is an amenable number.

406625385 is a deficient number, since it is larger than the sum of its proper divisors (266410455).

406625385 is a wasteful number, since it uses less digits than its factorization.

406625385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934808.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 406625385 is about 20164.9543763431. The cubic root of 406625385 is about 740.8520651498.

The spelling of 406625385 in words is "four hundred six million, six hundred twenty-five thousand, three hundred eighty-five".