205125400 has 48 divisors (see below), whose sum is σ = 504978840. Its totient is φ = 77222400.

The previous prime is 205125379. The next prime is 205125413. The reversal of 205125400 is 4521502.

It is a congruent number.

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, 26766 + ... + 33565.

Almost surely, 2^205125400 is an apocalyptic number.

205125400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205125400 is an abundant number, since it is smaller than the sum of its proper divisors (299853440).

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

205125400 is a wasteful number, since it uses less digits than its factorization.

205125400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60364 (or 60355 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 205125400 is about 14322.1995517448. The cubic root of 205125400 is about 589.7570578832.

Adding to 205125400 its reverse (4521502), we get a palindrome (209646902).

The spelling of 205125400 in words is "two hundred five million, one hundred twenty-five thousand, four hundred".