1698260225 has 12 divisors (see below), whose sum is σ = 2162758524. Its totient is φ = 1321888320.

The previous prime is 1698260183. The next prime is 1698260233. The reversal of 1698260225 is 5220628961.

It can be written as a sum of positive squares in 6 ways, for example, as 72880369 + 1625379856 = 8537^2 + 40316^2 .

It is not a de Polignac number, because 1698260225 - 2¹⁶ = 1698194689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 917054 + ... + 918903.

It is an arithmetic number, because the mean of its divisors is an integer number (180229877).

Almost surely, 2^1698260225 is an apocalyptic number.

It is an amenable number.

1698260225 is a deficient number, since it is larger than the sum of its proper divisors (464498299).

1698260225 is a wasteful number, since it uses less digits than its factorization.

1698260225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836004 (or 1835999 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1698260225 is about 41209.9529846856. The cubic root of 1698260225 is about 1193.0759172317.

The spelling of 1698260225 in words is "one billion, six hundred ninety-eight million, two hundred sixty thousand, two hundred twenty-five".