40318425 has 144 divisors (see below), whose sum is σ = 91601280. Its totient is φ = 17297280.

The previous prime is 40318409. The next prime is 40318429. The reversal of 40318425 is 52481304.

It is not a de Polignac number, because 40318425 - 2⁴ = 40318409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40318429) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 760699 + ... + 760751.

It is an arithmetic number, because the mean of its divisors is an integer number (636120).

Almost surely, 2^40318425 is an apocalyptic number.

40318425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40318425 is an abundant number, since it is smaller than the sum of its proper divisors (51282855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40318425 is a wasteful number, since it uses less digits than its factorization.

40318425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40318425 is about 6349.6791257512. The cubic root of 40318425 is about 342.9002903287.

Adding to 40318425 its reverse (52481304), we get a palindrome (92799729).

The spelling of 40318425 in words is "forty million, three hundred eighteen thousand, four hundred twenty-five".