78275005 has 8 divisors (see below), whose sum is σ = 95522400. Its totient is φ = 61558416.

The previous prime is 78274993. The next prime is 78275033. The reversal of 78275005 is 50057287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78275005 - 2²⁵ = 44720573 is a prime.

It is a super-2 number, since 2×78275005² = 12253952815500050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132375 + ... + 132964.

It is an arithmetic number, because the mean of its divisors is an integer number (11940300).

Almost surely, 2^78275005 is an apocalyptic number.

It is an amenable number.

78275005 is a deficient number, since it is larger than the sum of its proper divisors (17247395).

78275005 is a wasteful number, since it uses less digits than its factorization.

78275005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265403.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 78275005 is about 8847.3162597479. The cubic root of 78275005 is about 427.7674170139.

The spelling of 78275005 in words is "seventy-eight million, two hundred seventy-five thousand, five".