78250 has 16 divisors (see below), whose sum is σ = 146952. Its totient is φ = 31200.

The previous prime is 78241. The next prime is 78259. The reversal of 78250 is 5287.

It is an interprime number because it is at equal distance from previous prime (78241) and next prime (78259).

It can be written as a sum of positive squares in 4 ways, for example, as 3721 + 74529 = 61^2 + 273^2 .

It is a super-2 number, since 2×78250² = 12246125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78259) by changing a digit.

78250 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94 + ... + 406.

2⁷⁸²⁵⁰ is an apocalyptic number.

78250 is a deficient number, since it is larger than the sum of its proper divisors (68702).

78250 is a wasteful number, since it uses less digits than its factorization.

78250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 78250 is about 279.7320146140. The cubic root of 78250 is about 42.7721861972.

The spelling of 78250 in words is "seventy-eight thousand, two hundred fifty".