40578425 has 6 divisors (see below), whose sum is σ = 50317278. Its totient is φ = 32462720.

The previous prime is 40578389. The next prime is 40578427. The reversal of 40578425 is 52487504.

It can be written as a sum of positive squares in 3 ways, for example, as 3356224 + 37222201 = 1832^2 + 6101^2 .

It is not a de Polignac number, because 40578425 - 2⁸ = 40578169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40578427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 811544 + ... + 811593.

It is an arithmetic number, because the mean of its divisors is an integer number (8386213).

Almost surely, 2^40578425 is an apocalyptic number.

It is an amenable number.

40578425 is a deficient number, since it is larger than the sum of its proper divisors (9738853).

40578425 is a wasteful number, since it uses less digits than its factorization.

40578425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623147 (or 1623142 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 40578425 is about 6370.1197006022. The cubic root of 40578425 is about 343.6357945682.

The spelling of 40578425 in words is "forty million, five hundred seventy-eight thousand, four hundred twenty-five".