40430625 has 20 divisors (see below), whose sum is σ = 67365936. Its totient is φ = 21562000.

The previous prime is 40430623. The next prime is 40430647. The reversal of 40430625 is 52603404.

It is not a de Polignac number, because 40430625 - 2¹ = 40430623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40430595 and 40430604.

It is not an unprimeable number, because it can be changed into a prime (40430623) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 8907 + ... + 12656.

Almost surely, 2^40430625 is an apocalyptic number.

It is an amenable number.

40430625 is a deficient number, since it is larger than the sum of its proper divisors (26935311).

40430625 is an equidigital number, since it uses as much as digits as its factorization.

40430625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21586 (or 21571 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40430625 is about 6358.5080797307. The cubic root of 40430625 is about 343.2180753870.

The spelling of 40430625 in words is "forty million, four hundred thirty thousand, six hundred twenty-five".