263125540 has 24 divisors (see below), whose sum is σ = 552992832. Its totient is φ = 105168480.

The previous prime is 263125531. The next prime is 263125571. The reversal of 263125540 is 45521362.

It is a junction number, because it is equal to n+sod(n) for n = 263125499 and 263125508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25867 + ... + 34573.

It is an arithmetic number, because the mean of its divisors is an integer number (23041368).

Almost surely, 2^263125540 is an apocalyptic number.

263125540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263125540 is an abundant number, since it is smaller than the sum of its proper divisors (289867292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263125540 is a wasteful number, since it uses less digits than its factorization.

263125540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10227 (or 10225 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 263125540 is about 16221.1448424579. The cubic root of 263125540 is about 640.7977844150.

The spelling of 263125540 in words is "two hundred sixty-three million, one hundred twenty-five thousand, five hundred forty".