905255199601 has 3 divisors (see below), whose sum is σ = 905256151051. Its totient is φ = 905254248152.

The previous prime is 905255199581. The next prime is 905255199613. The reversal of 905255199601 is 106991552509.

The square root of 905255199601 is 951449.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 308468049201 + 596787150400 = 555399^2 + 772520^2 .

It is not a de Polignac number, because 905255199601 - 2⁹ = 905255199089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (905255191601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 475725 + ... + 1427173.

Almost surely, 2^905255199601 is an apocalyptic number.

905255199601 is the 951449-th square number.

905255199601 is the 475725-th centered octagonal number.

It is an amenable number.

905255199601 is a deficient number, since it is larger than the sum of its proper divisors (951450).

905255199601 is an frugal number, since it uses more digits than its factorization.

905255199601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902898 (or 951449 counting only the distinct ones).

The product of its (nonzero) digits is 1093500, while the sum is 52.

The spelling of 905255199601 in words is "nine hundred five billion, two hundred fifty-five million, one hundred ninety-nine thousand, six hundred one".