525112032140021 has 4 divisors (see below), whose sum is σ = 525112086568044. Its totient is φ = 525111977712000.

The previous prime is 525112032139997. The next prime is 525112032140027. The reversal of 525112032140021 is 120041230211525.

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 can be written as a sum of positive squares in 2 ways, for example, as 371605235014225 + 153506797125796 = 19277065^2 + 12389786^2 .

It is a cyclic number.

It is not a de Polignac number, because 525112032140021 - 2¹⁸ = 525112031877877 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 (525112032140027) 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, 8412380 + ... + 33481221.

It is an arithmetic number, because the mean of its divisors is an integer number (131278021642011).

Almost surely, 2^{525112032140021} is an apocalyptic number.

It is an amenable number.

525112032140021 is a deficient number, since it is larger than the sum of its proper divisors (54428023).

525112032140021 is a wasteful number, since it uses less digits than its factorization.

525112032140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54428022.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 525112032140021 its reverse (120041230211525), we get a palindrome (645153262351546).

The spelling of 525112032140021 in words is "five hundred twenty-five trillion, one hundred twelve billion, thirty-two million, one hundred forty thousand, twenty-one".