73809025 has 6 divisors (see below), whose sum is σ = 91523222. Its totient is φ = 59047200.

The previous prime is 73809013. The next prime is 73809037. The reversal of 73809025 is 52090837.

It is an interprime number because it is at equal distance from previous prime (73809013) and next prime (73809037).

It can be written as a sum of positive squares in 3 ways, for example, as 2169729 + 71639296 = 1473^2 + 8464^2 .

It is not a de Polignac number, because 73809025 - 2⁹ = 73808513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1476156 + ... + 1476205.

Almost surely, 2^73809025 is an apocalyptic number.

It is an amenable number.

73809025 is a deficient number, since it is larger than the sum of its proper divisors (17714197).

73809025 is a wasteful number, since it uses less digits than its factorization.

73809025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952371 (or 2952366 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 73809025 is about 8591.2178996927. The cubic root of 73809025 is about 419.4721732989.

The spelling of 73809025 in words is "seventy-three million, eight hundred nine thousand, twenty-five".