78025 has 6 divisors (see below), whose sum is σ = 96782. Its totient is φ = 62400.

The previous prime is 78017. The next prime is 78031. The reversal of 78025 is 52087.

It can be written as a sum of positive squares in 3 ways, for example, as 1296 + 76729 = 36^2 + 277^2 .

It is not a de Polignac number, because 78025 - 2³ = 78017 is a prime.

It is a Duffinian number.

78025 is a lucky number.

It is a nialpdrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 77987 and 78005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1536 + ... + 1585.

2⁷⁸⁰²⁵ is an apocalyptic number.

It is an amenable number.

78025 is a deficient number, since it is larger than the sum of its proper divisors (18757).

78025 is a wasteful number, since it uses less digits than its factorization.

78025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131 (or 3126 counting only the distinct ones).

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

The square root of 78025 is about 279.3295544693. The cubic root of 78025 is about 42.7311511357.

The spelling of 78025 in words is "seventy-eight thousand, twenty-five".