525565165601 has 16 divisors (see below), whose sum is σ = 615646573440. Its totient is φ = 439367068800.

The previous prime is 525565165591. The next prime is 525565165637. The reversal of 525565165601 is 106561565525.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 525565165601 - 2⁶ = 525565165537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (525565165681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5500196 + ... + 5594933.

It is an arithmetic number, because the mean of its divisors is an integer number (38477910840).

Almost surely, 2^525565165601 is an apocalyptic number.

It is an amenable number.

525565165601 is a deficient number, since it is larger than the sum of its proper divisors (90081407839).

525565165601 is a wasteful number, since it uses less digits than its factorization.

525565165601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11095304.

The product of its (nonzero) digits is 1350000, while the sum is 47.

The spelling of 525565165601 in words is "five hundred twenty-five billion, five hundred sixty-five million, one hundred sixty-five thousand, six hundred one".