525132736621 has 2 divisors, whose sum is σ = 525132736622. Its totient is φ = 525132736620.

The previous prime is 525132736619. The next prime is 525132736663. The reversal of 525132736621 is 126637231525.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522953154025 + 2179582596 = 723155^2 + 46686^2 .

It is a cyclic number.

It is not a de Polignac number, because 525132736621 - 2¹ = 525132736619 is a prime.

Together with 525132736619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525132736021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262566368310 + 262566368311.

It is an arithmetic number, because the mean of its divisors is an integer number (262566368311).

Almost surely, 2^525132736621 is an apocalyptic number.

It is an amenable number.

525132736621 is a deficient number, since it is larger than the sum of its proper divisors (1).

525132736621 is an equidigital number, since it uses as much as digits as its factorization.

525132736621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 43.

The spelling of 525132736621 in words is "five hundred twenty-five billion, one hundred thirty-two million, seven hundred thirty-six thousand, six hundred twenty-one".