2145523250 has 64 divisors (see below), whose sum is σ = 4579926624. Its totient is φ = 745574400.

The previous prime is 2145523249. The next prime is 2145523271. The reversal of 2145523250 is 523255412.

It can be written as a sum of positive squares in 16 ways, for example, as 353101681 + 1792421569 = 18791^2 + 42337^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35834 + ... + 74666.

Almost surely, 2^2145523250 is an apocalyptic number.

2145523250 is an abundant number, since it is smaller than the sum of its proper divisors (2434403374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145523250 is a wasteful number, since it uses less digits than its factorization.

2145523250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38880 (or 38870 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2145523250 is about 46319.7932853764. The cubic root of 2145523250 is about 1289.7664481137.

Adding to 2145523250 its reverse (523255412), we get a palindrome (2668778662).

The spelling of 2145523250 in words is "two billion, one hundred forty-five million, five hundred twenty-three thousand, two hundred fifty".