78337125 has 48 divisors (see below), whose sum is σ = 146502720. Its totient is φ = 41763600.

The previous prime is 78337121. The next prime is 78337141. The reversal of 78337125 is 52173387.

It is not a de Polignac number, because 78337125 - 2² = 78337121 is a prime.

It is a super-2 number, since 2×78337125² = 12273410306531250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78337125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78337121) 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 47 ways as a sum of consecutive naturals, for example, 29086 + ... + 31664.

It is an arithmetic number, because the mean of its divisors is an integer number (3052140).

Almost surely, 2^78337125 is an apocalyptic number.

78337125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78337125 is a deficient number, since it is larger than the sum of its proper divisors (68165595).

78337125 is an equidigital number, since it uses as much as digits as its factorization.

78337125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609 (or 2587 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 78337125 is about 8850.8262326181. The cubic root of 78337125 is about 427.8805475741.

The spelling of 78337125 in words is "seventy-eight million, three hundred thirty-seven thousand, one hundred twenty-five".