243070225 has 12 divisors (see below), whose sum is σ = 311130880. Its totient is φ = 188182800.

The previous prime is 243070207. The next prime is 243070237. The reversal of 243070225 is 522070342.

It is a de Polignac number, because none of the positive numbers 2^k-243070225 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 243070225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156045 + ... + 157594.

Almost surely, 2^243070225 is an apocalyptic number.

243070225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243070225 is a deficient number, since it is larger than the sum of its proper divisors (68060655).

243070225 is a wasteful number, since it uses less digits than its factorization.

243070225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313680 (or 313675 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 243070225 is about 15590.7095733324. The cubic root of 243070225 is about 624.0852538363.

The spelling of 243070225 in words is "two hundred forty-three million, seventy thousand, two hundred twenty-five".