243450425 has 6 divisors (see below), whose sum is σ = 301878558. Its totient is φ = 194760320.

The previous prime is 243450413. The next prime is 243450479. The reversal of 243450425 is 524054342.

It can be written as a sum of positive squares in 3 ways, for example, as 75203584 + 168246841 = 8672^2 + 12971^2 .

It is a de Polignac number, because none of the positive numbers 2^k-243450425 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4868984 + ... + 4869033.

It is an arithmetic number, because the mean of its divisors is an integer number (50313093).

Almost surely, 2^243450425 is an apocalyptic number.

243450425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243450425 is a deficient number, since it is larger than the sum of its proper divisors (58428133).

243450425 is an equidigital number, since it uses as much as digits as its factorization.

243450425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9738027 (or 9738022 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 243450425 is about 15602.8979680058. The cubic root of 243450425 is about 624.4104734417.

The spelling of 243450425 in words is "two hundred forty-three million, four hundred fifty thousand, four hundred twenty-five".