78125411 has 32 divisors (see below), whose sum is σ = 101391360. Its totient is φ = 58506624.

The previous prime is 78125393. The next prime is 78125413. The reversal of 78125411 is 11452187.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78125411 is a prime.

It is a super-2 number, since 2×78125411² = 12207159687837842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78125413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341045 + ... + 341273.

It is an arithmetic number, because the mean of its divisors is an integer number (3168480).

Almost surely, 2^78125411 is an apocalyptic number.

78125411 is a deficient number, since it is larger than the sum of its proper divisors (23265949).

78125411 is a wasteful number, since it uses less digits than its factorization.

78125411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435.

The product of its digits is 2240, while the sum is 29.

The square root of 78125411 is about 8838.8580144722. The cubic root of 78125411 is about 427.4947363213.

Adding to 78125411 its reverse (11452187), we get a palindrome (89577598).

The spelling of 78125411 in words is "seventy-eight million, one hundred twenty-five thousand, four hundred eleven".