125002145201 has 4 divisors (see below), whose sum is σ = 125002854900. Its totient is φ = 125001435504.

The previous prime is 125002145197. The next prime is 125002145243. The reversal of 125002145201 is 102541200521.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 42172729600 + 82829415601 = 205360^2 + 287801^2 .

It is a cyclic number.

It is not a de Polignac number, because 125002145201 - 2² = 125002145197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125002145291) 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, 132035 + ... + 517143.

It is an arithmetic number, because the mean of its divisors is an integer number (31250713725).

Almost surely, 2^125002145201 is an apocalyptic number.

It is an amenable number.

125002145201 is a deficient number, since it is larger than the sum of its proper divisors (709699).

125002145201 is an equidigital number, since it uses as much as digits as its factorization.

125002145201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709698.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 125002145201 its reverse (102541200521), we get a palindrome (227543345722).

The spelling of 125002145201 in words is "one hundred twenty-five billion, two million, one hundred forty-five thousand, two hundred one".