34520525209 has 3 divisors (see below), whose sum is σ = 34520711007. Its totient is φ = 34520339412.

The previous prime is 34520525203. The next prime is 34520525239. The reversal of 34520525209 is 90252502543.

It is a happy number.

The square root of 34520525209 is 185797.

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., 34493775625 + 26749584 = 185725^2 + 5172^2 .

It is not a de Polignac number, because 34520525209 - 2³ = 34520525201 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34520525201) 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, 92899 + ... + 278695.

It is an arithmetic number, because the mean of its divisors is an integer number (11506903669).

Almost surely, 2^34520525209 is an apocalyptic number.

34520525209 is the 185797-th square number.

34520525209 is the 92899-th centered octagonal number.

It is an amenable number.

34520525209 is a deficient number, since it is larger than the sum of its proper divisors (185798).

34520525209 is an frugal number, since it uses more digits than its factorization.

34520525209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371594 (or 185797 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 34520525209 in words is "thirty-four billion, five hundred twenty million, five hundred twenty-five thousand, two hundred nine".