2125521718 has 8 divisors (see below), whose sum is σ = 3189893112. Its totient is φ = 1062224016.

The previous prime is 2125521707. The next prime is 2125521719. The reversal of 2125521718 is 8171255212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125521719) 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, 263455 + ... + 271402.

It is an arithmetic number, because the mean of its divisors is an integer number (398736639).

Almost surely, 2^2125521718 is an apocalyptic number.

2125521718 is a deficient number, since it is larger than the sum of its proper divisors (1064371394).

2125521718 is a wasteful number, since it uses less digits than its factorization.

2125521718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536846.

The product of its digits is 11200, while the sum is 34.

The square root of 2125521718 is about 46103.3807654059. The cubic root of 2125521718 is about 1285.7460011424.

The spelling of 2125521718 in words is "two billion, one hundred twenty-five million, five hundred twenty-one thousand, seven hundred eighteen".