2125421215 has 8 divisors (see below), whose sum is σ = 2551344480. Its totient is φ = 1699777632.

The previous prime is 2125421213. The next prime is 2125421219. The reversal of 2125421215 is 5121245212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2125421215 - 2¹ = 2125421213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2125421215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125421213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52819 + ... + 83908.

It is an arithmetic number, because the mean of its divisors is an integer number (318918060).

Almost surely, 2^2125421215 is an apocalyptic number.

2125421215 is a deficient number, since it is larger than the sum of its proper divisors (425923265).

2125421215 is a wasteful number, since it uses less digits than its factorization.

2125421215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139841.

The product of its digits is 1600, while the sum is 25.

The square root of 2125421215 is about 46102.2907782249. The cubic root of 2125421215 is about 1285.7257357857.

Adding to 2125421215 its reverse (5121245212), we get a palindrome (7246666427).

The spelling of 2125421215 in words is "two billion, one hundred twenty-five million, four hundred twenty-one thousand, two hundred fifteen".