202311225 has 18 divisors (see below), whose sum is σ = 362362286. Its totient is φ = 107899200.

The previous prime is 202311209. The next prime is 202311247. The reversal of 202311225 is 522113202.

It can be written as a sum of positive squares in 3 ways, for example, as 38675961 + 163635264 = 6219^2 + 12792^2 .

It is not a de Polignac number, because 202311225 - 2⁴ = 202311209 is a prime.

It is a super-2 number, since 2×202311225² = 81859663522001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202311198 and 202311207.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 449356 + ... + 449805.

Almost surely, 2^202311225 is an apocalyptic number.

202311225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

202311225 is a deficient number, since it is larger than the sum of its proper divisors (160051061).

202311225 is a wasteful number, since it uses less digits than its factorization.

202311225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899177 (or 899169 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 202311225 is about 14223.6150468156. The cubic root of 202311225 is about 587.0476131125.

Adding to 202311225 its reverse (522113202), we get a palindrome (724424427).

The spelling of 202311225 in words is "two hundred two million, three hundred eleven thousand, two hundred twenty-five".