40809302725 has 6 divisors (see below), whose sum is σ = 50603535410. Its totient is φ = 32647442160.

The previous prime is 40809302719. The next prime is 40809302783. The reversal of 40809302725 is 52720390804.

It can be written as a sum of positive squares in 3 ways, for example, as 22268961 + 40787033764 = 4719^2 + 201958^2 .

It is not a de Polignac number, because 40809302725 - 2¹⁵ = 40809269957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 816186030 + ... + 816186079.

Almost surely, 2^40809302725 is an apocalyptic number.

It is an amenable number.

40809302725 is a deficient number, since it is larger than the sum of its proper divisors (9794232685).

40809302725 is a wasteful number, since it uses less digits than its factorization.

40809302725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632372119 (or 1632372114 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 40809302725 in words is "forty billion, eight hundred nine million, three hundred two thousand, seven hundred twenty-five".