2349981691225 has 45 divisors (see below), whose sum is σ = 3399981293117. Its totient is φ = 1611158478720.

The previous prime is 2349981691201. The next prime is 2349981691319. The reversal of 2349981691225 is 5221961899432.

The square root of 2349981691225 is 1532965.

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

2349981691225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 626002187209 + 1723979504016 = 791203^2 + 1313004^2 .

It is not a de Polignac number, because 2349981691225 - 2⁷ = 2349981691097 is a prime.

It is a super-2 number, since 2×2349981691225² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 375573297 + ... + 375579553.

Almost surely, 2^{2349981691225} is an apocalyptic number.

2349981691225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2349981691225 is the 1532965-th square number.

2349981691225 is the 766483-rd centered octagonal number.

It is an amenable number.

2349981691225 is a deficient number, since it is larger than the sum of its proper divisors (1049999601892).

2349981691225 is an frugal number, since it uses more digits than its factorization.

2349981691225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12552 (or 6269 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 61.

The spelling of 2349981691225 in words is "two trillion, three hundred forty-nine billion, nine hundred eighty-one million, six hundred ninety-one thousand, two hundred twenty-five".