406568825 has 12 divisors (see below), whose sum is σ = 542926188. Its totient is φ = 300235200.

The previous prime is 406568819. The next prime is 406568831. The reversal of 406568825 is 528865604.

It is an interprime number because it is at equal distance from previous prime (406568819) and next prime (406568831).

It can be written as a sum of positive squares in 6 ways, for example, as 168298729 + 238270096 = 12973^2 + 15436^2 .

It is not a de Polignac number, because 406568825 - 2¹⁶ = 406503289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 625166 + ... + 625815.

It is an arithmetic number, because the mean of its divisors is an integer number (45243849).

Almost surely, 2^406568825 is an apocalyptic number.

It is an amenable number.

406568825 is a deficient number, since it is larger than the sum of its proper divisors (136357363).

406568825 is a wasteful number, since it uses less digits than its factorization.

406568825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251004 (or 1250999 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 406568825 is about 20163.5518944456. The cubic root of 406568825 is about 740.8177136825.

The spelling of 406568825 in words is "four hundred six million, five hundred sixty-eight thousand, eight hundred twenty-five".