263221307416025 has 48 divisors (see below), whose sum is σ = 373967401637760. Its totient is φ = 180037744934400.

The previous prime is 263221307416009. The next prime is 263221307416103. The reversal of 263221307416025 is 520614703122362.

It is not a de Polignac number, because 263221307416025 - 2⁴ = 263221307416009 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127527527 + ... + 129575123.

It is an arithmetic number, because the mean of its divisors is an integer number (7790987534120).

Almost surely, 2^{263221307416025} is an apocalyptic number.

263221307416025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263221307416025 is a deficient number, since it is larger than the sum of its proper divisors (110746094221735).

263221307416025 is a wasteful number, since it uses less digits than its factorization.

263221307416025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049474 (or 2049469 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 263221307416025 in words is "two hundred sixty-three trillion, two hundred twenty-one billion, three hundred seven million, four hundred sixteen thousand, twenty-five".