525101680321 has 3 divisors (see below), whose sum is σ = 525102404961. Its totient is φ = 525100955682.

The previous prime is 525101680307. The next prime is 525101680351. The reversal of 525101680321 is 123086101525.

The square root of 525101680321 is 724639.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-525101680321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525101680351) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 362320 + ... + 1086958.

It is an arithmetic number, because the mean of its divisors is an integer number (175034134987).

Almost surely, 2^525101680321 is an apocalyptic number.

525101680321 is the 724639-th square number.

525101680321 is the 362320-th centered octagonal number.

It is an amenable number.

525101680321 is a deficient number, since it is larger than the sum of its proper divisors (724640).

525101680321 is an frugal number, since it uses more digits than its factorization.

525101680321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449278 (or 724639 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

Adding to 525101680321 its reverse (123086101525), we get a palindrome (648187781846).

The spelling of 525101680321 in words is "five hundred twenty-five billion, one hundred one million, six hundred eighty thousand, three hundred twenty-one".