40143425 has 24 divisors (see below), whose sum is σ = 57234432. Its totient is φ = 27360000.

The previous prime is 40143403. The next prime is 40143437. The reversal of 40143425 is 52434104.

It is not a de Polignac number, because 40143425 - 2¹⁶ = 40077889 is a prime.

It is a super-2 number, since 2×40143425² = 3222989141461250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40143425.

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, 32825 + ... + 34025.

It is an arithmetic number, because the mean of its divisors is an integer number (2384768).

Almost surely, 2^40143425 is an apocalyptic number.

It is an amenable number.

40143425 is a deficient number, since it is larger than the sum of its proper divisors (17091007).

40143425 is a wasteful number, since it uses less digits than its factorization.

40143425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40143425 is about 6335.8839162346. The cubic root of 40143425 is about 342.4034572585.

Adding to 40143425 its reverse (52434104), we get a palindrome (92577529).

The spelling of 40143425 in words is "forty million, one hundred forty-three thousand, four hundred twenty-five".