85262248009 has 3 divisors (see below), whose sum is σ = 85262540007. Its totient is φ = 85261956012.

The previous prime is 85262247979. The next prime is 85262248037. The reversal of 85262248009 is 90084226258.

The square root of 85262248009 is 291997.

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., 38445405625 + 46816842384 = 196075^2 + 216372^2 .

It is not a de Polignac number, because 85262248009 - 2⁷ = 85262247881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85262248009.

It is not an unprimeable number, because it can be changed into a prime (85262248039) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 145999 + ... + 437995.

It is an arithmetic number, because the mean of its divisors is an integer number (28420846669).

Almost surely, 2^85262248009 is an apocalyptic number.

85262248009 is the 291997-th square number.

85262248009 is the 145999-th centered octagonal number.

It is an amenable number.

85262248009 is a deficient number, since it is larger than the sum of its proper divisors (291998).

85262248009 is an frugal number, since it uses more digits than its factorization.

85262248009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583994 (or 291997 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 85262248009 in words is "eighty-five billion, two hundred sixty-two million, two hundred forty-eight thousand, nine".