78125895 has 12 divisors (see below), whose sum is σ = 135418296. Its totient is φ = 41667120.

The previous prime is 78125881. The next prime is 78125947. The reversal of 78125895 is 59852187.

It is a happy number.

It is not a de Polignac number, because 78125895 - 2⁷ = 78125767 is a prime.

It is a super-2 number, since 2×78125895² = 12207310939102050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1736131 = 78125895 / (7 + 8 + 1 + 2 + 5 + 8 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 78125895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 868021 + ... + 868110.

It is an arithmetic number, because the mean of its divisors is an integer number (11284858).

Almost surely, 2^78125895 is an apocalyptic number.

78125895 is a deficient number, since it is larger than the sum of its proper divisors (57292401).

78125895 is a wasteful number, since it uses less digits than its factorization.

78125895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736142 (or 1736139 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 78125895 is about 8838.8853935324. The cubic root of 78125895 is about 427.4956191200.

The spelling of 78125895 in words is "seventy-eight million, one hundred twenty-five thousand, eight hundred ninety-five".