205157427 has 8 divisors (see below), whose sum is σ = 273688464. Its totient is φ = 136699008.

The previous prime is 205157419. The next prime is 205157437. The reversal of 205157427 is 724751502.

205157427 is digitally balanced in base 2, because in such base 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 not a de Polignac number, because 205157427 - 2³ = 205157419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205157437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11178 + ... + 23135.

It is an arithmetic number, because the mean of its divisors is an integer number (34211058).

Almost surely, 2^205157427 is an apocalyptic number.

205157427 is a deficient number, since it is larger than the sum of its proper divisors (68531037).

205157427 is a wasteful number, since it uses less digits than its factorization.

205157427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36309.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 205157427 is about 14323.3175975400. The cubic root of 205157427 is about 589.7877499482.

The spelling of 205157427 in words is "two hundred five million, one hundred fifty-seven thousand, four hundred twenty-seven".