40778025 has 12 divisors (see below), whose sum is σ = 67419792. Its totient is φ = 21748240.

The previous prime is 40777993. The next prime is 40778039. The reversal of 40778025 is 52087704.

40778025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40778025 - 2⁵ = 40777993 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 271779 + ... + 271928.

It is an arithmetic number, because the mean of its divisors is an integer number (5618316).

Almost surely, 2^40778025 is an apocalyptic number.

It is an amenable number.

40778025 is a deficient number, since it is larger than the sum of its proper divisors (26641767).

40778025 is a wasteful number, since it uses less digits than its factorization.

40778025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543720 (or 543715 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 40778025 is about 6385.7673775358. The cubic root of 40778025 is about 344.1983065404.

The spelling of 40778025 in words is "forty million, seven hundred seventy-eight thousand, twenty-five".