263225571 has 8 divisors (see below), whose sum is σ = 401105664. Its totient is φ = 150414600.

The previous prime is 263225561. The next prime is 263225579. The reversal of 263225571 is 175522362.

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

It is not a de Polignac number, because 263225571 - 2⁵ = 263225539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263225579) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6267255 + ... + 6267296.

It is an arithmetic number, because the mean of its divisors is an integer number (50138208).

Almost surely, 2^263225571 is an apocalyptic number.

263225571 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

263225571 is a deficient number, since it is larger than the sum of its proper divisors (137880093).

263225571 is a wasteful number, since it uses less digits than its factorization.

263225571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12534561.

The product of its digits is 25200, while the sum is 33.

The square root of 263225571 is about 16224.2279015058. The cubic root of 263225571 is about 640.8789769921.

It can be divided in two parts, 2632 and 25571, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 263225571 in words is "two hundred sixty-three million, two hundred twenty-five thousand, five hundred seventy-one".