40033725 has 36 divisors (see below), whose sum is σ = 70349664. Its totient is φ = 20084480.

The previous prime is 40033723. The next prime is 40033733. The reversal of 40033725 is 52733004.

It is not a de Polignac number, because 40033725 - 2¹ = 40033723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40033695 and 40033704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40033723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20752 + ... + 22598.

Almost surely, 2^40033725 is an apocalyptic number.

It is an amenable number.

40033725 is a deficient number, since it is larger than the sum of its proper divisors (30315939).

40033725 is a wasteful number, since it uses less digits than its factorization.

40033725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 40033725 is about 6327.2209539418. The cubic root of 40033725 is about 342.0912772337.

Adding to 40033725 its reverse (52733004), we get a palindrome (92766729).

The spelling of 40033725 in words is "forty million, thirty-three thousand, seven hundred twenty-five".