263404725 has 24 divisors (see below), whose sum is σ = 436555392. Its totient is φ = 140140800.

The previous prime is 263404721. The next prime is 263404741. The reversal of 263404725 is 527404362.

It is not a de Polignac number, because 263404725 - 2² = 263404721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263404721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28420 + ... + 36530.

It is an arithmetic number, because the mean of its divisors is an integer number (18189808).

Almost surely, 2^263404725 is an apocalyptic number.

263404725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263404725 is a deficient number, since it is larger than the sum of its proper divisors (173150667).

263404725 is a wasteful number, since it uses less digits than its factorization.

263404725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8557 (or 8552 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 263404725 is about 16229.7481496171. The cubic root of 263404725 is about 641.0243402678.

The spelling of 263404725 in words is "two hundred sixty-three million, four hundred four thousand, seven hundred twenty-five".