72825506 has 8 divisors (see below), whose sum is σ = 117641244. Its totient is φ = 33611760.

The previous prime is 72825491. The next prime is 72825517. The reversal of 72825506 is 60552827.

It can be written as a sum of positive squares in 2 ways, for example, as 71250481 + 1575025 = 8441^2 + 1255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400465 + ... + 1400516.

Almost surely, 2^72825506 is an apocalyptic number.

72825506 is a deficient number, since it is larger than the sum of its proper divisors (44815738).

72825506 is a wasteful number, since it uses less digits than its factorization.

72825506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800996.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 72825506 is about 8533.7861468401. The cubic root of 72825506 is about 417.6006541352.

The spelling of 72825506 in words is "seventy-two million, eight hundred twenty-five thousand, five hundred six".