2125354521 has 8 divisors (see below), whose sum is σ = 2840119200. Its totient is φ = 1413746432.

The previous prime is 2125354519. The next prime is 2125354549. The reversal of 2125354521 is 1254535212.

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 2125354521 - 2¹ = 2125354519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2125354591) 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, 787575 + ... + 790268.

It is an arithmetic number, because the mean of its divisors is an integer number (355014900).

Almost surely, 2^2125354521 is an apocalyptic number.

It is an amenable number.

2125354521 is a deficient number, since it is larger than the sum of its proper divisors (714764679).

2125354521 is a wasteful number, since it uses less digits than its factorization.

2125354521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578295.

The product of its digits is 12000, while the sum is 30.

The square root of 2125354521 is about 46101.5674462377. The cubic root of 2125354521 is about 1285.7122873002.

Adding to 2125354521 its reverse (1254535212), we get a palindrome (3379889733).

The spelling of 2125354521 in words is "two billion, one hundred twenty-five million, three hundred fifty-four thousand, five hundred twenty-one".