205045130025345 has 64 divisors (see below), whose sum is σ = 347877112296960. Its totient is φ = 102774559899648.

The previous prime is 205045130025341. The next prime is 205045130025349. The reversal of 205045130025345 is 543520031540502.

It is an interprime number because it is at equal distance from previous prime (205045130025341) and next prime (205045130025349).

It is not a de Polignac number, because 205045130025345 - 2² = 205045130025341 is a prime.

It is a super-2 number, since 2×205045130025345² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205045130025341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1835670537 + ... + 1835782233.

It is an arithmetic number, because the mean of its divisors is an integer number (5435579879640).

Almost surely, 2^{205045130025345} is an apocalyptic number.

It is an amenable number.

205045130025345 is a deficient number, since it is larger than the sum of its proper divisors (142831982271615).

205045130025345 is a wasteful number, since it uses less digits than its factorization.

205045130025345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122154.

The product of its (nonzero) digits is 360000, while the sum is 39.

Adding to 205045130025345 its reverse (543520031540502), we get a palindrome (748565161565847).

The spelling of 205045130025345 in words is "two hundred five trillion, forty-five billion, one hundred thirty million, twenty-five thousand, three hundred forty-five".