73210525 has 6 divisors (see below), whose sum is σ = 90781082. Its totient is φ = 58568400.

The previous prime is 73210507. The next prime is 73210549. The reversal of 73210525 is 52501237.

It can be written as a sum of positive squares in 3 ways, for example, as 25130169 + 48080356 = 5013^2 + 6934^2 .

It is not a de Polignac number, because 73210525 - 2⁵ = 73210493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 2928421 = 73210525 / (7 + 3 + 2 + 1 + 0 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73210525.

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, 1464186 + ... + 1464235.

Almost surely, 2^73210525 is an apocalyptic number.

It is an amenable number.

73210525 is a deficient number, since it is larger than the sum of its proper divisors (17570557).

73210525 is a wasteful number, since it uses less digits than its factorization.

73210525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928431 (or 2928426 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 73210525 is about 8556.3149194031. The cubic root of 73210525 is about 418.3352944923.

The spelling of 73210525 in words is "seventy-three million, two hundred ten thousand, five hundred twenty-five".