265145505676485 has 128 divisors (see below), whose sum is σ = 518342282035200. Its totient is φ = 113092962048000.

The previous prime is 265145505676451. The next prime is 265145505676523. The reversal of 265145505676485 is 584676505541562.

It is a happy number.

It is not a de Polignac number, because 265145505676485 - 2¹¹ = 265145505674437 is a prime.

It is a super-3 number, since 3×265145505676485³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 608823591 + ... + 609258939.

It is an arithmetic number, because the mean of its divisors is an integer number (4049549078400).

Almost surely, 2^{265145505676485} is an apocalyptic number.

It is an amenable number.

265145505676485 is a deficient number, since it is larger than the sum of its proper divisors (253196776358715).

265145505676485 is a wasteful number, since it uses less digits than its factorization.

265145505676485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441579.

The product of its (nonzero) digits is 1209600000, while the sum is 69.

The spelling of 265145505676485 in words is "two hundred sixty-five trillion, one hundred forty-five billion, five hundred five million, six hundred seventy-six thousand, four hundred eighty-five".