205401252 has 24 divisors (see below), whose sum is σ = 547736896. Its totient is φ = 58686048.

The previous prime is 205401221. The next prime is 205401263. The reversal of 205401252 is 252104502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222543 + ... + 1222710.

Almost surely, 2^205401252 is an apocalyptic number.

It is an amenable number.

205401252 is an abundant number, since it is smaller than the sum of its proper divisors (342335644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205401252 is a wasteful number, since it uses less digits than its factorization.

205401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445267 (or 2445265 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 205401252 is about 14331.8265409542. The cubic root of 205401252 is about 590.0213072837.

Adding to 205401252 its reverse (252104502), we get a palindrome (457505754).

The spelling of 205401252 in words is "two hundred five million, four hundred one thousand, two hundred fifty-two".