125310336065 has 4 divisors (see below), whose sum is σ = 150372403284. Its totient is φ = 100248268848.

The previous prime is 125310336049. The next prime is 125310336071. The reversal of 125310336065 is 560633013521.

It is a Cunningham number, because it is equal to 353992²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560633013521 = 7 ⋅80090430503.

It can be written as a sum of positive squares in 2 ways, for example, as 45112060816 + 80198275249 = 212396^2 + 283193^2 .

It is a cyclic number.

It is not a de Polignac number, because 125310336065 - 2⁴ = 125310336049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12531033602 + ... + 12531033611.

It is an arithmetic number, because the mean of its divisors is an integer number (37593100821).

Almost surely, 2^125310336065 is an apocalyptic number.

It is an amenable number.

125310336065 is a deficient number, since it is larger than the sum of its proper divisors (25062067219).

125310336065 is an equidigital number, since it uses as much as digits as its factorization.

125310336065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25062067218.

The product of its (nonzero) digits is 48600, while the sum is 35.

Adding to 125310336065 its reverse (560633013521), we get a palindrome (685943349586).

The spelling of 125310336065 in words is "one hundred twenty-five billion, three hundred ten million, three hundred thirty-six thousand, sixty-five".