40312025 has 24 divisors (see below), whose sum is σ = 54621504. Its totient is φ = 29332800.

The previous prime is 40312009. The next prime is 40312039. The reversal of 40312025 is 52021304.

It is not a de Polignac number, because 40312025 - 2⁴ = 40312009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40311994 and 40312012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22202 + ... + 23948.

It is an arithmetic number, because the mean of its divisors is an integer number (2275896).

Almost surely, 2^40312025 is an apocalyptic number.

It is an amenable number.

40312025 is a deficient number, since it is larger than the sum of its proper divisors (14309479).

40312025 is a wasteful number, since it uses less digits than its factorization.

40312025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40312025 is about 6349.1751432765. The cubic root of 40312025 is about 342.8821457874.

Adding to 40312025 its reverse (52021304), we get a palindrome (92333329).

The spelling of 40312025 in words is "forty million, three hundred twelve thousand, twenty-five".