265027640 has 32 divisors (see below), whose sum is σ = 597397680. Its totient is φ = 105818112.

The previous prime is 265027531. The next prime is 265027661. The reversal of 265027640 is 46720562.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 265027597 and 265027606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17339 + ... + 28821.

Almost surely, 2^265027640 is an apocalyptic number.

265027640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265027640 is an abundant number, since it is smaller than the sum of its proper divisors (332370040).

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

265027640 is a wasteful number, since it uses less digits than its factorization.

265027640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12071 (or 12067 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 265027640 is about 16279.6695298154. The cubic root of 265027640 is about 642.3381596642.

The spelling of 265027640 in words is "two hundred sixty-five million, twenty-seven thousand, six hundred forty".