40205825 has 12 divisors (see below), whose sum is σ = 54387888. Its totient is φ = 29240400.

The previous prime is 40205819. The next prime is 40205827. The reversal of 40205825 is 52850204.

It is not a de Polignac number, because 40205825 - 2²⁴ = 23428609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40205794 and 40205803.

It is not an unprimeable number, because it can be changed into a prime (40205827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72827 + ... + 73376.

It is an arithmetic number, because the mean of its divisors is an integer number (4532324).

Almost surely, 2^40205825 is an apocalyptic number.

It is an amenable number.

40205825 is a deficient number, since it is larger than the sum of its proper divisors (14182063).

40205825 is a wasteful number, since it uses less digits than its factorization.

40205825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146224 (or 146219 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 40205825 is about 6340.8063367367. The cubic root of 40205825 is about 342.5807790712.

The spelling of 40205825 in words is "forty million, two hundred five thousand, eight hundred twenty-five".