265387000551 has 16 divisors (see below), whose sum is σ = 357017794560. Its totient is φ = 175340762240.

The previous prime is 265387000517. The next prime is 265387000591. The reversal of 265387000551 is 155000783562.

It is a cyclic number.

It is not a de Polignac number, because 265387000551 - 2²⁶ = 265319891687 is a prime.

It is a super-2 number, since 2×265387000551² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265387000591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3751930 + ... + 3822008.

It is an arithmetic number, because the mean of its divisors is an integer number (22313612160).

Almost surely, 2^265387000551 is an apocalyptic number.

265387000551 is a deficient number, since it is larger than the sum of its proper divisors (91630794009).

265387000551 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (265387000550) it forms an eRAP, since the sums of their prime factors are consecutive (81365 and 81366).

265387000551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81366.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 265387000551 in words is "two hundred sixty-five billion, three hundred eighty-seven million, five hundred fifty-one", and thus it is an aban number.