243102025 has 24 divisors (see below), whose sum is σ = 311062680. Its totient is φ = 188328960.

The previous prime is 243101977. The next prime is 243102029. The reversal of 243102025 is 520201342.

It can be written as a sum of positive squares in 12 ways, for example, as 22014864 + 221087161 = 4692^2 + 14869^2 .

It is not a de Polignac number, because 243102025 - 2¹³ = 243093833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243101993 and 243102011.

It is not an unprimeable number, because it can be changed into a prime (243102029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248337 + ... + 249313.

It is an arithmetic number, because the mean of its divisors is an integer number (12960945).

Almost surely, 2^243102025 is an apocalyptic number.

243102025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243102025 is a deficient number, since it is larger than the sum of its proper divisors (67960655).

243102025 is a wasteful number, since it uses less digits than its factorization.

243102025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1288 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 243102025 is about 15591.7293781030. The cubic root of 243102025 is about 624.1124682564.

Adding to 243102025 its reverse (520201342), we get a palindrome (763303367).

It can be divided in two parts, 24310 and 2025, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 243102025 in words is "two hundred forty-three million, one hundred two thousand, twenty-five".