78237125 has 16 divisors (see below), whose sum is σ = 98622576. Its totient is φ = 61960000.

The previous prime is 78237119. The next prime is 78237151. The reversal of 78237125 is 52173287.

It can be written as a sum of positive squares in 8 ways, for example, as 10042561 + 68194564 = 3169^2 + 8258^2 .

It is not a de Polignac number, because 78237125 - 2⁴ = 78237109 is a prime.

It is a super-2 number, since 2×78237125² = 12242095456531250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9527 + ... + 15723.

It is an arithmetic number, because the mean of its divisors is an integer number (6163911).

Almost surely, 2^78237125 is an apocalyptic number.

It is an amenable number.

78237125 is a deficient number, since it is larger than the sum of its proper divisors (20385451).

78237125 is a wasteful number, since it uses less digits than its factorization.

78237125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6313 (or 6303 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 78237125 is about 8845.1752385128. The cubic root of 78237125 is about 427.6984020313.

The spelling of 78237125 in words is "seventy-eight million, two hundred thirty-seven thousand, one hundred twenty-five".