205252154 has 8 divisors (see below), whose sum is σ = 308448948. Its totient is φ = 102435840.

The previous prime is 205252153. The next prime is 205252189. The reversal of 205252154 is 451252502.

It can be written as a sum of positive squares in 2 ways, for example, as 204919225 + 332929 = 14315^2 + 577^2 .

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

It is not an unprimeable number, because it can be changed into a prime (205252153) 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, 93767 + ... + 95930.

Almost surely, 2^205252154 is an apocalyptic number.

205252154 is a deficient number, since it is larger than the sum of its proper divisors (103196794).

205252154 is a wasteful number, since it uses less digits than its factorization.

205252154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190240.

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

The square root of 205252154 is about 14326.6239568155. The cubic root of 205252154 is about 589.8785098888.

The spelling of 205252154 in words is "two hundred five million, two hundred fifty-two thousand, one hundred fifty-four".