40252645 has 16 divisors (see below), whose sum is σ = 50573952. Its totient is φ = 30697920.

The previous prime is 40252637. The next prime is 40252649. The reversal of 40252645 is 54625204.

40252645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40252645 - 2³ = 40252637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40252649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65359 + ... + 65971.

It is an arithmetic number, because the mean of its divisors is an integer number (3160872).

Almost surely, 2^40252645 is an apocalyptic number.

It is an amenable number.

40252645 is a deficient number, since it is larger than the sum of its proper divisors (10321307).

40252645 is a wasteful number, since it uses less digits than its factorization.

40252645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 40252645 is about 6344.4972220027. The cubic root of 40252645 is about 342.7137068249.

Adding to 40252645 its reverse (54625204), we get a palindrome (94877849).

It can be divided in two parts, 4025 and 2645, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 40252645 in words is "forty million, two hundred fifty-two thousand, six hundred forty-five".