17125000261 has 4 divisors (see below), whose sum is σ = 17125268524. Its totient is φ = 17124732000.

The previous prime is 17125000223. The next prime is 17125000301. The reversal of 17125000261 is 16200052171.

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 2 ways, for example, as 8261719236 + 8863281025 = 90894^2 + 94145^2 .

It is a cyclic number.

It is not a de Polignac number, because 17125000261 - 2²⁷ = 16990782533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17125000661) 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 3 ways as a sum of consecutive naturals, for example, 22921 + ... + 186481.

It is an arithmetic number, because the mean of its divisors is an integer number (4281317131).

Almost surely, 2^17125000261 is an apocalyptic number.

17125000261 is the 58524-th centered decagonal number.

It is an amenable number.

17125000261 is a deficient number, since it is larger than the sum of its proper divisors (268263).

17125000261 is a wasteful number, since it uses less digits than its factorization.

17125000261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268262.

The product of its (nonzero) digits is 840, while the sum is 25.

The spelling of 17125000261 in words is "seventeen billion, one hundred twenty-five million, two hundred sixty-one", and thus it is an aban number.