205020245185275 has 72 divisors (see below), whose sum is σ = 368136063356880. Its totient is φ = 100633537105920.

The previous prime is 205020245185241. The next prime is 205020245185289. The reversal of 205020245185275 is 572581542020502.

It is not a de Polignac number, because 205020245185275 - 2¹⁴ = 205020245168891 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19727290 + ... + 28270239.

Almost surely, 2^{205020245185275} is an apocalyptic number.

205020245185275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205020245185275 is a deficient number, since it is larger than the sum of its proper divisors (163115818171605).

205020245185275 is a wasteful number, since it uses less digits than its factorization.

205020245185275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47997905 (or 47997887 counting only the distinct ones).

The product of its (nonzero) digits is 2240000, while the sum is 48.

The spelling of 205020245185275 in words is "two hundred five trillion, twenty billion, two hundred forty-five million, one hundred eighty-five thousand, two hundred seventy-five".