2500502821 has 4 divisors (see below), whose sum is σ = 2502088000. Its totient is φ = 2498917644.

The previous prime is 2500502819. The next prime is 2500502827. The reversal of 2500502821 is 1282050052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2500502821 - 2¹ = 2500502819 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 (2500502827) 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 3 ways as a sum of consecutive naturals, for example, 790221 + ... + 793378.

It is an arithmetic number, because the mean of its divisors is an integer number (625522000).

Almost surely, 2^2500502821 is an apocalyptic number.

It is an amenable number.

2500502821 is a deficient number, since it is larger than the sum of its proper divisors (1585179).

2500502821 is a wasteful number, since it uses less digits than its factorization.

2500502821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585178.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2500502821 is about 50005.0279571965. The cubic root of 2500502821 is about 1357.2997932765.

Adding to 2500502821 its reverse (1282050052), we get a palindrome (3782552873).

The spelling of 2500502821 in words is "two billion, five hundred million, five hundred two thousand, eight hundred twenty-one".