23143171240225 has 81 divisors (see below), whose sum is σ = 30434212017963. Its totient is φ = 17457195168000.

The previous prime is 23143171240187. The next prime is 23143171240243. The reversal of 23143171240225 is 52204217134132.

The square root of 23143171240225 is 4810735.

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

It can be written as a sum of positive squares in 13 ways, for example, as 22244740243489 + 898430996736 = 4716433^2 + 947856^2 .

It is not a de Polignac number, because 23143171240225 - 2⁷ = 23143171240097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 30572220547 + ... + 30572221303.

Almost surely, 2^{23143171240225} is an apocalyptic number.

23143171240225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23143171240225 is the 4810735-th square number.

23143171240225 is the 2405368-th centered octagonal number.

It is an amenable number.

23143171240225 is a deficient number, since it is larger than the sum of its proper divisors (7291040777738).

23143171240225 is an frugal number, since it uses more digits than its factorization.

23143171240225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 23143171240225 its reverse (52204217134132), we get a palindrome (75347388374357).

The spelling of 23143171240225 in words is "twenty-three trillion, one hundred forty-three billion, one hundred seventy-one million, two hundred forty thousand, two hundred twenty-five".