78125601 has 16 divisors (see below), whose sum is σ = 105565824. Its totient is φ = 51389184.

The previous prime is 78125581. The next prime is 78125629. The reversal of 78125601 is 10652187.

It is not a de Polignac number, because 78125601 - 2⁵ = 78125569 is a prime.

It is a super-2 number, since 2×78125601² = 12207219063222402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78125651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107100 + ... + 107826.

It is an arithmetic number, because the mean of its divisors is an integer number (6597864).

Almost surely, 2^78125601 is an apocalyptic number.

It is an amenable number.

78125601 is a deficient number, since it is larger than the sum of its proper divisors (27440223).

78125601 is a wasteful number, since it uses less digits than its factorization.

78125601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 78125601 is about 8838.8687624605. The cubic root of 78125601 is about 427.4950828749.

Adding to 78125601 its reverse (10652187), we get a palindrome (88777788).

The spelling of 78125601 in words is "seventy-eight million, one hundred twenty-five thousand, six hundred one".