263555625 has 80 divisors (see below), whose sum is σ = 470099520. Its totient is φ = 131040000.

The previous prime is 263555603. The next prime is 263555629. The reversal of 263555625 is 526555362.

It is not a de Polignac number, because 263555625 - 2⁷ = 263555497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263555629) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2011810 + ... + 2011940.

It is an arithmetic number, because the mean of its divisors is an integer number (5876244).

Almost surely, 2^263555625 is an apocalyptic number.

263555625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263555625 is a deficient number, since it is larger than the sum of its proper divisors (206543895).

263555625 is a wasteful number, since it uses less digits than its factorization.

263555625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 205 counting only the distinct ones).

The product of its digits is 270000, while the sum is 39.

The square root of 263555625 is about 16234.3963546539. The cubic root of 263555625 is about 641.1467274764.

The spelling of 263555625 in words is "two hundred sixty-three million, five hundred fifty-five thousand, six hundred twenty-five".