1375250000 has 70 divisors (see below), whose sum is σ = 3331246422. Its totient is φ = 550000000.

The previous prime is 1375249999. The next prime is 1375250011. The reversal of 1375250000 is 525731.

It can be written as a sum of positive squares in 7 ways, for example, as 1261102144 + 114147856 = 35512^2 + 10684^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 247250 + ... + 252750.

Almost surely, 2^1375250000 is an apocalyptic number.

1375250000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665623211).

1375250000 is an abundant number, since it is smaller than the sum of its proper divisors (1955996422).

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

1375250000 is an frugal number, since it uses more digits than its factorization.

1375250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539 (or 5508 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 1375250000 is about 37084.3632815773. The cubic root of 1375250000 is about 1112.0574345367.

Adding to 1375250000 its reverse (525731), we get a palindrome (1375775731).

The spelling of 1375250000 in words is "one billion, three hundred seventy-five million, two hundred fifty thousand".