40455925 has 12 divisors (see below), whose sum is σ = 50289316. Its totient is φ = 32284800.

The previous prime is 40455923. The next prime is 40455931. The reversal of 40455925 is 52955404.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 19044 + 40436881 = 138^2 + 6359^2 .

It is not a de Polignac number, because 40455925 - 2¹ = 40455923 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40455923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9655 + ... + 13195.

Almost surely, 2^40455925 is an apocalyptic number.

It is an amenable number.

40455925 is a deficient number, since it is larger than the sum of its proper divisors (9833391).

40455925 is a wasteful number, since it uses less digits than its factorization.

40455925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008 (or 4003 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 40455925 is about 6360.4972289908. The cubic root of 40455925 is about 343.2896515472.

The spelling of 40455925 in words is "forty million, four hundred fifty-five thousand, nine hundred twenty-five".