40424025 has 12 divisors (see below), whose sum is σ = 66834512. Its totient is φ = 21559440.

The previous prime is 40424009. The next prime is 40424051. The reversal of 40424025 is 52042404.

It is not a de Polignac number, because 40424025 - 2⁴ = 40424009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40423992 and 40424010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269419 + ... + 269568.

Almost surely, 2^40424025 is an apocalyptic number.

It is an amenable number.

40424025 is a deficient number, since it is larger than the sum of its proper divisors (26410487).

40424025 is a wasteful number, since it uses less digits than its factorization.

40424025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539000 (or 538995 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 40424025 is about 6357.9890688802. The cubic root of 40424025 is about 343.1993984346.

Adding to 40424025 its reverse (52042404), we get a palindrome (92466429).

The spelling of 40424025 in words is "forty million, four hundred twenty-four thousand, twenty-five".