40003425 has 72 divisors (see below), whose sum is σ = 89369280. Its totient is φ = 16617600.

The previous prime is 40003409. The next prime is 40003451. The reversal of 40003425 is 52430004.

It is a happy number.

It is not a de Polignac number, because 40003425 - 2⁴ = 40003409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40003398 and 40003407.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16171 + ... + 18479.

It is an arithmetic number, because the mean of its divisors is an integer number (1241240).

Almost surely, 2^40003425 is an apocalyptic number.

40003425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40003425 is an abundant number, since it is smaller than the sum of its proper divisors (49365855).

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

40003425 is a wasteful number, since it uses less digits than its factorization.

40003425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343 (or 2335 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40003425 is about 6324.8260845655. The cubic root of 40003425 is about 342.0049501694.

Adding to 40003425 its reverse (52430004), we get a palindrome (92433429).

The spelling of 40003425 in words is "forty million, three thousand, four hundred twenty-five".