40530425 has 36 divisors (see below), whose sum is σ = 55754244. Its totient is φ = 29203200.

The previous prime is 40530419. The next prime is 40530437. The reversal of 40530425 is 52403504.

It can be written as a sum of positive squares in 18 ways, for example, as 40500496 + 29929 = 6364^2 + 173^2 .

It is not a de Polignac number, because 40530425 - 2⁴ = 40530409 is a prime.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 40530425.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 223835 + ... + 224015.

It is an arithmetic number, because the mean of its divisors is an integer number (1548729).

Almost surely, 2^40530425 is an apocalyptic number.

It is an amenable number.

40530425 is a deficient number, since it is larger than the sum of its proper divisors (15223819).

40530425 is a wasteful number, since it uses less digits than its factorization.

40530425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 40530425 is about 6366.3509956646. The cubic root of 40530425 is about 343.5002461318.

Adding to 40530425 its reverse (52403504), we get a palindrome (92933929).

The spelling of 40530425 in words is "forty million, five hundred thirty thousand, four hundred twenty-five".