40442725 has 12 divisors (see below), whose sum is σ = 50238724. Its totient is φ = 32296320.

The previous prime is 40442669. The next prime is 40442737. The reversal of 40442725 is 52724404.

It is a happy number.

40442725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 5230369 + 35212356 = 2287^2 + 5934^2 .

It is not a de Polignac number, because 40442725 - 2¹³ = 40434533 is a prime.

It is a super-2 number, since 2×40442725² = 3271228010851250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40442693 and 40442702.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17857 + ... + 19993.

Almost surely, 2^40442725 is an apocalyptic number.

It is an amenable number.

40442725 is a deficient number, since it is larger than the sum of its proper divisors (9795999).

40442725 is a wasteful number, since it uses less digits than its factorization.

40442725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 40442725 is about 6359.4594896107. The cubic root of 40442725 is about 343.2523111879.

The spelling of 40442725 in words is "forty million, four hundred forty-two thousand, seven hundred twenty-five".