133225465665517 has 4 divisors (see below), whose sum is σ = 137819447240220. Its totient is φ = 128631484090816.

The previous prime is 133225465665493. The next prime is 133225465665533. The reversal of 133225465665517 is 715566564522331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 103459941168676 + 29765524496841 = 10171526^2 + 5455779^2 .

It is a cyclic number.

It is not a de Polignac number, because 133225465665517 - 2³⁵ = 133191105927149 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 (133225465668517) 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, 2296990787308 + ... + 2296990787365.

It is an arithmetic number, because the mean of its divisors is an integer number (34454861810055).

Almost surely, 2^{133225465665517} is an apocalyptic number.

It is an amenable number.

133225465665517 is a deficient number, since it is larger than the sum of its proper divisors (4593981574703).

133225465665517 is an equidigital number, since it uses as much as digits as its factorization.

133225465665517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593981574702.

The product of its digits is 136080000, while the sum is 61.

The spelling of 133225465665517 in words is "one hundred thirty-three trillion, two hundred twenty-five billion, four hundred sixty-five million, six hundred sixty-five thousand, five hundred seventeen".