40285825 has 6 divisors (see below), whose sum is σ = 49954454. Its totient is φ = 32228640.

The previous prime is 40285807. The next prime is 40285829. The reversal of 40285825 is 52858204.

It can be written as a sum of positive squares in 3 ways, for example, as 633616 + 39652209 = 796^2 + 6297^2 .

It is not a de Polignac number, because 40285825 - 2⁷ = 40285697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40285829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 805692 + ... + 805741.

Almost surely, 2^40285825 is an apocalyptic number.

It is an amenable number.

40285825 is a deficient number, since it is larger than the sum of its proper divisors (9668629).

40285825 is a wasteful number, since it uses less digits than its factorization.

40285825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611443 (or 1611438 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 40285825 is about 6347.1115477830. Note that the first 3 decimals coincide. The cubic root of 40285825 is about 342.8078465418.

The spelling of 40285825 in words is "forty million, two hundred eighty-five thousand, eight hundred twenty-five".