3105250000 has 70 divisors (see below), whose sum is σ = 7521036542. Its totient is φ = 1242000000.

The previous prime is 3105249997. The next prime is 3105250007. The reversal of 3105250000 is 525013.

It can be written as a sum of positive squares in 7 ways, for example, as 2884549264 + 220700736 = 53708^2 + 14856^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3105250007) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 243790 + ... + 256210.

Almost surely, 2^3105250000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3105250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3760518271).

3105250000 is an abundant number, since it is smaller than the sum of its proper divisors (4415786542).

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

3105250000 is an frugal number, since it uses more digits than its factorization.

3105250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12459 (or 12428 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 3105250000 is about 55724.7700757930. The cubic root of 3105250000 is about 1458.9223924170.

Adding to 3105250000 its reverse (525013), we get a palindrome (3105775013).

The spelling of 3105250000 in words is "three billion, one hundred five million, two hundred fifty thousand".