73825649 has 2 divisors, whose sum is σ = 73825650. Its totient is φ = 73825648.

The previous prime is 73825643. The next prime is 73825667. The reversal of 73825649 is 94652837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73273600 + 552049 = 8560^2 + 743^2 .

It is a cyclic number.

It is not a de Polignac number, because 73825649 - 2²⁰ = 72777073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73825643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36912824 + 36912825.

It is an arithmetic number, because the mean of its divisors is an integer number (36912825).

Almost surely, 2^73825649 is an apocalyptic number.

It is an amenable number.

73825649 is a deficient number, since it is larger than the sum of its proper divisors (1).

73825649 is an equidigital number, since it uses as much as digits as its factorization.

73825649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 73825649 is about 8592.1853448352. The cubic root of 73825649 is about 419.5036634946.

It can be divided in two parts, 7382 and 5649, that added together give a palindrome (13031).

The spelling of 73825649 in words is "seventy-three million, eight hundred twenty-five thousand, six hundred forty-nine".