2529875921 has 2 divisors, whose sum is σ = 2529875922. Its totient is φ = 2529875920.

The previous prime is 2529875911. The next prime is 2529875923. The reversal of 2529875921 is 1295789252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2319770896 + 210105025 = 48164^2 + 14495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2529875921 - 2¹⁴ = 2529859537 is a prime.

It is a Sophie Germain prime.

Together with 2529875923, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2529875921.

It is not a weakly prime, because it can be changed into another prime (2529875923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264937960 + 1264937961.

It is an arithmetic number, because the mean of its divisors is an integer number (1264937961).

Almost surely, 2^2529875921 is an apocalyptic number.

It is an amenable number.

2529875921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2529875921 is an equidigital number, since it uses as much as digits as its factorization.

2529875921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 50.

The square root of 2529875921 is about 50297.8719331146. The cubic root of 2529875921 is about 1362.5937958154.

The spelling of 2529875921 in words is "two billion, five hundred twenty-nine million, eight hundred seventy-five thousand, nine hundred twenty-one".