40540425 has 12 divisors (see below), whose sum is σ = 67026960. Its totient is φ = 21621520.

The previous prime is 40540391. The next prime is 40540441. The reversal of 40540425 is 52404504.

It is not a de Polignac number, because 40540425 - 2¹⁴ = 40524041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40540395 and 40540404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270195 + ... + 270344.

It is an arithmetic number, because the mean of its divisors is an integer number (5585580).

Almost surely, 2^40540425 is an apocalyptic number.

It is an amenable number.

40540425 is a deficient number, since it is larger than the sum of its proper divisors (26486535).

40540425 is a wasteful number, since it uses less digits than its factorization.

40540425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540552 (or 540547 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 40540425 is about 6367.1363264815. The cubic root of 40540425 is about 343.5284942113.

Adding to 40540425 its reverse (52404504), we get a palindrome (92944929).

The spelling of 40540425 in words is "forty million, five hundred forty thousand, four hundred twenty-five".