79125401 has 4 divisors (see below), whose sum is σ = 79143204. Its totient is φ = 79107600.

The previous prime is 79125377. The next prime is 79125413. The reversal of 79125401 is 10452197.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10452197 = 7 ⋅1493171.

It can be written as a sum of positive squares in 2 ways, for example, as 28729600 + 50395801 = 5360^2 + 7099^2 .

It is a cyclic number.

It is not a de Polignac number, because 79125401 - 2⁶ = 79125337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79125001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3971 + ... + 13191.

It is an arithmetic number, because the mean of its divisors is an integer number (19785801).

Almost surely, 2^79125401 is an apocalyptic number.

It is an amenable number.

79125401 is a deficient number, since it is larger than the sum of its proper divisors (17803).

79125401 is an equidigital number, since it uses as much as digits as its factorization.

79125401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17802.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 79125401 is about 8895.2459774871. The cubic root of 79125401 is about 429.3109588316.

Adding to 79125401 its reverse (10452197), we get a palindrome (89577598).

The spelling of 79125401 in words is "seventy-nine million, one hundred twenty-five thousand, four hundred one".