205252497 has 12 divisors (see below), whose sum is σ = 312080080. Its totient is φ = 129633048.

The previous prime is 205252493. The next prime is 205252499. The reversal of 205252497 is 794252502.

It is a happy number.

205252497 is a `hidden beast` number, since 20 + 525 + 24 + 97 = 666.

It is not a de Polignac number, because 205252497 - 2² = 205252493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205252493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 599983 + ... + 600324.

Almost surely, 2^205252497 is an apocalyptic number.

It is an amenable number.

205252497 is a deficient number, since it is larger than the sum of its proper divisors (106827583).

205252497 is a wasteful number, since it uses less digits than its factorization.

205252497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200332 (or 1200329 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 205252497 is about 14326.6359275302. The cubic root of 205252497 is about 589.8788384736.

The spelling of 205252497 in words is "two hundred five million, two hundred fifty-two thousand, four hundred ninety-seven".