263594962225 has 27 divisors (see below), whose sum is σ = 380248206177. Its totient is φ = 180738509280.

The previous prime is 263594962219. The next prime is 263594962247. The reversal of 263594962225 is 522269495362.

The square root of 263594962225 is 513415.

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

It can be written as a sum of positive squares in 4 ways, for example, as 7187761 + 263587774464 = 2681^2 + 513408^2 .

It is not a de Polignac number, because 263594962225 - 2⁵ = 263594962193 is a prime.

It is a super-2 number, since 2×263594962225² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17962191 + ... + 17976859.

Almost surely, 2^263594962225 is an apocalyptic number.

263594962225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

263594962225 is the 513415-th square number.

263594962225 is the 256708-th centered octagonal number.

It is an amenable number.

263594962225 is a deficient number, since it is larger than the sum of its proper divisors (116653243952).

263594962225 is an frugal number, since it uses more digits than its factorization.

263594962225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29362 (or 14681 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 55.

The spelling of 263594962225 in words is "two hundred sixty-three billion, five hundred ninety-four million, nine hundred sixty-two thousand, two hundred twenty-five".