265225005551 has 4 divisors (see below), whose sum is σ = 289336369704. Its totient is φ = 241113641400.

The previous prime is 265225005497. The next prime is 265225005557. The reversal of 265225005551 is 155500522562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265225005551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265225005557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12055682060 + ... + 12055682081.

It is an arithmetic number, because the mean of its divisors is an integer number (72334092426).

Almost surely, 2^265225005551 is an apocalyptic number.

265225005551 is a deficient number, since it is larger than the sum of its proper divisors (24111364153).

265225005551 is a wasteful number, since it uses less digits than its factorization.

265225005551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24111364152.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 265225005551 in words is "two hundred sixty-five billion, two hundred twenty-five million, five thousand, five hundred fifty-one".