263190625 has 12 divisors (see below), whose sum is σ = 328971132. Its totient is φ = 210550000.

The previous prime is 263190619. The next prime is 263190649. The reversal of 263190625 is 526091362.

263190625 = 11471² + 11472².

It can be written as a sum of positive squares in 6 ways, for example, as 131583841 + 131606784 = 11471^2 + 11472^2 .

It is not a de Polignac number, because 263190625 - 2¹⁵ = 263157857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38986 + ... + 45235.

It is an arithmetic number, because the mean of its divisors is an integer number (27414261).

Almost surely, 2^263190625 is an apocalyptic number.

263190625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

263190625 is the 11472-nd centered square number.

It is an amenable number.

263190625 is a deficient number, since it is larger than the sum of its proper divisors (65780507).

263190625 is an frugal number, since it uses more digits than its factorization.

263190625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84246 (or 84226 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 263190625 is about 16223.1508961730. The cubic root of 263190625 is about 640.8506145653.

The spelling of 263190625 in words is "two hundred sixty-three million, one hundred ninety thousand, six hundred twenty-five".