204245262254265 has 16 divisors (see below), whose sum is σ = 326792897610048. Its totient is φ = 108930647201216.

The previous prime is 204245262254261. The next prime is 204245262254291. The reversal of 204245262254265 is 562452262542402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 204245262254265 - 2² = 204245262254261 is a prime.

It is a super-2 number, since 2×204245262254265² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204245262254261) 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 15 ways as a sum of consecutive naturals, for example, 1029442 + ... + 20237348.

It is an arithmetic number, because the mean of its divisors is an integer number (20424556100628).

Almost surely, 2^{204245262254265} is an apocalyptic number.

It is an amenable number.

204245262254265 is a deficient number, since it is larger than the sum of its proper divisors (122547635355783).

204245262254265 is a wasteful number, since it uses less digits than its factorization.

204245262254265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19916808.

The product of its (nonzero) digits is 18432000, while the sum is 51.

The spelling of 204245262254265 in words is "two hundred four trillion, two hundred forty-five billion, two hundred sixty-two million, two hundred fifty-four thousand, two hundred sixty-five".