2234459925721 has 3 divisors (see below), whose sum is σ = 2234461420533. Its totient is φ = 2234458430910.

The previous prime is 2234459925679. The next prime is 2234459925727. The reversal of 2234459925721 is 1275299544322.

It is a happy number.

The square root of 2234459925721 is 1494811.

It is a perfect power (a square), and thus also a powerful number.

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 is not a de Polignac number, because 2234459925721 - 2¹⁷ = 2234459794649 is a prime.

It is a super-2 number, since 2×2234459925721² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2234459925727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 747406 + ... + 2242216.

It is an arithmetic number, because the mean of its divisors is an integer number (744820473511).

Almost surely, 2^{2234459925721} is an apocalyptic number.

2234459925721 is the 1494811-st square number.

2234459925721 is the 747406-th centered octagonal number.

It is an amenable number.

2234459925721 is a deficient number, since it is larger than the sum of its proper divisors (1494812).

2234459925721 is an frugal number, since it uses more digits than its factorization.

2234459925721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989622 (or 1494811 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 55.

The spelling of 2234459925721 in words is "two trillion, two hundred thirty-four billion, four hundred fifty-nine million, nine hundred twenty-five thousand, seven hundred twenty-one".