78325250 has 16 divisors (see below), whose sum is σ = 146625336. Its totient is φ = 31330000.

The previous prime is 78325243. The next prime is 78325253. The reversal of 78325250 is 5252387.

It can be written as a sum of positive squares in 4 ways, for example, as 8886361 + 69438889 = 2981^2 + 8333^2 .

It is a super-2 number, since 2×78325250² = 12269689575125000, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (78325253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156401 + ... + 156900.

Almost surely, 2^78325250 is an apocalyptic number.

78325250 is a deficient number, since it is larger than the sum of its proper divisors (68300086).

78325250 is a wasteful number, since it uses less digits than its factorization.

78325250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313318 (or 313308 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 78325250 is about 8850.1553658679. The cubic root of 78325250 is about 427.8589259047.

The spelling of 78325250 in words is "seventy-eight million, three hundred twenty-five thousand, two hundred fifty".