263680925 has 6 divisors (see below), whose sum is σ = 326964378. Its totient is φ = 210944720.

The previous prime is 263680913. The next prime is 263680933. The reversal of 263680925 is 529086362.

It can be written as a sum of positive squares in 3 ways, for example, as 8281 + 263672644 = 91^2 + 16238^2 .

It is not a de Polignac number, because 263680925 - 2⁴ = 263680909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5273594 + ... + 5273643.

It is an arithmetic number, because the mean of its divisors is an integer number (54494063).

Almost surely, 2^263680925 is an apocalyptic number.

263680925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263680925 is a deficient number, since it is larger than the sum of its proper divisors (63283453).

263680925 is a wasteful number, since it uses less digits than its factorization.

263680925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10547247 (or 10547242 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 263680925 is about 16238.2549862970. The cubic root of 263680925 is about 641.2483163500.

The spelling of 263680925 in words is "two hundred sixty-three million, six hundred eighty thousand, nine hundred twenty-five".