263255745 has 8 divisors (see below), whose sum is σ = 421209216. Its totient is φ = 140403056.

The previous prime is 263255669. The next prime is 263255747. The reversal of 263255745 is 547552362.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 263255745 - 2⁹ = 263255233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263255747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8775177 + ... + 8775206.

It is an arithmetic number, because the mean of its divisors is an integer number (52651152).

Almost surely, 2^263255745 is an apocalyptic number.

It is an amenable number.

263255745 is a deficient number, since it is larger than the sum of its proper divisors (157953471).

263255745 is a wasteful number, since it uses less digits than its factorization.

263255745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17550391.

The product of its digits is 252000, while the sum is 39.

The square root of 263255745 is about 16225.1577804347. The cubic root of 263255745 is about 640.9034644096.

The spelling of 263255745 in words is "two hundred sixty-three million, two hundred fifty-five thousand, seven hundred forty-five".