2500344021 has 12 divisors (see below), whose sum is σ = 3878084832. Its totient is φ = 1428767928.

The previous prime is 2500344019. The next prime is 2500344047. The reversal of 2500344021 is 1204430052.

It is not a de Polignac number, because 2500344021 - 2¹ = 2500344019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500344061) 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 11 ways as a sum of consecutive naturals, for example, 8504425 + ... + 8504718.

It is an arithmetic number, because the mean of its divisors is an integer number (323173736).

Almost surely, 2^2500344021 is an apocalyptic number.

2500344021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2500344021 is a deficient number, since it is larger than the sum of its proper divisors (1377740811).

2500344021 is a wasteful number, since it uses less digits than its factorization.

2500344021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17009160 (or 17009153 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2500344021 is about 50003.4400916577. The cubic root of 2500344021 is about 1357.2710598863.

Adding to 2500344021 its reverse (1204430052), we get a palindrome (3704774073).

The spelling of 2500344021 in words is "two billion, five hundred million, three hundred forty-four thousand, twenty-one".