263925481 has 4 divisors (see below), whose sum is σ = 264644992. Its totient is φ = 263205972.

The previous prime is 263925479. The next prime is 263925499. The reversal of 263925481 is 184529362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 263925481 - 2¹ = 263925479 is a prime.

It is a super-2 number, since 2×263925481² = 139313319042162722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263925461) 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, 359205 + ... + 359938.

It is an arithmetic number, because the mean of its divisors is an integer number (66161248).

Almost surely, 2^263925481 is an apocalyptic number.

It is an amenable number.

263925481 is a deficient number, since it is larger than the sum of its proper divisors (719511).

263925481 is an equidigital number, since it uses as much as digits as its factorization.

263925481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719510.

The product of its digits is 103680, while the sum is 40.

The square root of 263925481 is about 16245.7834837228. The cubic root of 263925481 is about 641.4465011649.

The spelling of 263925481 in words is "two hundred sixty-three million, nine hundred twenty-five thousand, four hundred eighty-one".