205040125 has 32 divisors (see below), whose sum is σ = 269178624. Its totient is φ = 155736000.

The previous prime is 205040117. The next prime is 205040159. The reversal of 205040125 is 521040502.

It is not a de Polignac number, because 205040125 - 2³ = 205040117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198360 + ... + 199390.

It is an arithmetic number, because the mean of its divisors is an integer number (8411832).

Almost surely, 2^205040125 is an apocalyptic number.

205040125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205040125 is a deficient number, since it is larger than the sum of its proper divisors (64138499).

205040125 is a wasteful number, since it uses less digits than its factorization.

205040125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1116 counting only the distinct ones).

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

The square root of 205040125 is about 14319.2222204979. Note that the first 5 decimals coincide. The cubic root of 205040125 is about 589.6753216967.

Adding to 205040125 its reverse (521040502), we get a palindrome (726080627).

The spelling of 205040125 in words is "two hundred five million, forty thousand, one hundred twenty-five".