40066925 has 6 divisors (see below), whose sum is σ = 49683018. Its totient is φ = 32053520.

The previous prime is 40066921. The next prime is 40066931. The reversal of 40066925 is 52966004.

It can be written as a sum of positive squares in 3 ways, for example, as 4866436 + 35200489 = 2206^2 + 5933^2 .

It is not a de Polignac number, because 40066925 - 2² = 40066921 is a prime.

It is a super-3 number, since 3×40066925³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40066891 and 40066900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40066921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801314 + ... + 801363.

It is an arithmetic number, because the mean of its divisors is an integer number (8280503).

Almost surely, 2^40066925 is an apocalyptic number.

It is an amenable number.

40066925 is a deficient number, since it is larger than the sum of its proper divisors (9616093).

40066925 is a wasteful number, since it uses less digits than its factorization.

40066925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602687 (or 1602682 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 40066925 is about 6329.8439949180. The cubic root of 40066925 is about 342.1858166275.

The spelling of 40066925 in words is "forty million, sixty-six thousand, nine hundred twenty-five".