40655925 has 60 divisors (see below), whose sum is σ = 79806276. Its totient is φ = 20390400.

The previous prime is 40655921. The next prime is 40655939. The reversal of 40655925 is 52955604.

40655925 is a `hidden beast` number, since 4 + 0 + 65 + 592 + 5 = 666.

40655925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2537649 + 38118276 = 1593^2 + 6174^2 .

It is not a de Polignac number, because 40655925 - 2² = 40655921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40655925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40655921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 33835 + ... + 35015.

Almost surely, 2^40655925 is an apocalyptic number.

40655925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40655925 is a deficient number, since it is larger than the sum of its proper divisors (39150351).

40655925 is a wasteful number, since it uses less digits than its factorization.

40655925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 40655925 is about 6376.1998870801. The cubic root of 40655925 is about 343.8544233718.

The spelling of 40655925 in words is "forty million, six hundred fifty-five thousand, nine hundred twenty-five".