40197725 has 12 divisors (see below), whose sum is σ = 51193524. Its totient is φ = 31288320.

The previous prime is 40197713. The next prime is 40197727. The reversal of 40197725 is 52779104.

It can be written as a sum of positive squares in 6 ways, for example, as 683929 + 39513796 = 827^2 + 6286^2 .

It is not a de Polignac number, because 40197725 - 2¹⁴ = 40181341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40197727) 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, 20804 + ... + 22653.

It is an arithmetic number, because the mean of its divisors is an integer number (4266127).

Almost surely, 2^40197725 is an apocalyptic number.

It is an amenable number.

40197725 is a deficient number, since it is larger than the sum of its proper divisors (10995799).

40197725 is a wasteful number, since it uses less digits than its factorization.

40197725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43504 (or 43499 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 40197725 is about 6340.1675845359. The cubic root of 40197725 is about 342.5577717029.

The spelling of 40197725 in words is "forty million, one hundred ninety-seven thousand, seven hundred twenty-five".