265665003525 has 48 divisors (see below), whose sum is σ = 493916512320. Its totient is φ = 139980888000.

The previous prime is 265665003517. The next prime is 265665003557. The reversal of 265665003525 is 525300566562.

265665003525 is a `hidden beast` number, since 2 + 6 + 566 + 50 + 0 + 35 + 2 + 5 = 666.

265665003525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 265665003525 - 2³ = 265665003517 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2314926 + ... + 2426975.

It is an arithmetic number, because the mean of its divisors is an integer number (10289927340).

Almost surely, 2^265665003525 is an apocalyptic number.

265665003525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265665003525 is a deficient number, since it is larger than the sum of its proper divisors (228251508795).

265665003525 is a wasteful number, since it uses less digits than its factorization.

265665003525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742003 (or 4741992 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The spelling of 265665003525 in words is "two hundred sixty-five billion, six hundred sixty-five million, three thousand, five hundred twenty-five".