205215254 has 8 divisors (see below), whose sum is σ = 314372448. Its totient is φ = 100424440.

The previous prime is 205215251. The next prime is 205215277. The reversal of 205215254 is 452512502.

205215254 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×205215254² = 84226600948569032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205215251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091477 + ... + 1091664.

It is an arithmetic number, because the mean of its divisors is an integer number (39296556).

Almost surely, 2^205215254 is an apocalyptic number.

205215254 is a deficient number, since it is larger than the sum of its proper divisors (109157194).

205215254 is a wasteful number, since it uses less digits than its factorization.

205215254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183190.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 205215254 is about 14325.3360868079. The cubic root of 205215254 is about 589.8431585399.

Adding to 205215254 its reverse (452512502), we get a palindrome (657727756).

The spelling of 205215254 in words is "two hundred five million, two hundred fifteen thousand, two hundred fifty-four".