2125321504545 has 128 divisors (see below), whose sum is σ = 3672760320000. Its totient is φ = 1046273918976.

The previous prime is 2125321504519. The next prime is 2125321504571. The reversal of 2125321504545 is 5454051235212.

It is an interprime number because it is at equal distance from previous prime (2125321504519) and next prime (2125321504571).

It is not a de Polignac number, because 2125321504545 - 2²⁰ = 2125320455969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1729308991 + ... + 1729310219.

It is an arithmetic number, because the mean of its divisors is an integer number (28693440000).

Almost surely, 2^{2125321504545} is an apocalyptic number.

It is an amenable number.

2125321504545 is a deficient number, since it is larger than the sum of its proper divisors (1547438815455).

2125321504545 is a wasteful number, since it uses less digits than its factorization.

2125321504545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 2125321504545 its reverse (5454051235212), we get a palindrome (7579372739757).

The spelling of 2125321504545 in words is "two trillion, one hundred twenty-five billion, three hundred twenty-one million, five hundred four thousand, five hundred forty-five".