78825237 has 8 divisors (see below), whose sum is σ = 106823520. Its totient is φ = 51688560.

The previous prime is 78825223. The next prime is 78825269. The reversal of 78825237 is 73252887.

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

It is not a de Polignac number, because 78825237 - 2⁴ = 78825221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78825137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 215187 + ... + 215552.

It is an arithmetic number, because the mean of its divisors is an integer number (13352940).

Almost surely, 2^78825237 is an apocalyptic number.

It is an amenable number.

78825237 is a deficient number, since it is larger than the sum of its proper divisors (27998283).

78825237 is a wasteful number, since it uses less digits than its factorization.

78825237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430803.

The product of its digits is 188160, while the sum is 42.

The square root of 78825237 is about 8878.3577873388. The cubic root of 78825237 is about 428.7674039747.

The spelling of 78825237 in words is "seventy-eight million, eight hundred twenty-five thousand, two hundred thirty-seven".