130511250 has 100 divisors (see below), whose sum is σ = 365718870. Its totient is φ = 34776000.

The previous prime is 130511233. The next prime is 130511257. The reversal of 130511250 is 52115031.

130511250 is a `hidden beast` number, since 130 + 511 + 25 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 9753129 + 120758121 = 3123^2 + 10989^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (130511257) by changing a digit.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 100606 + ... + 101894.

Almost surely, 2^130511250 is an apocalyptic number.

130511250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 130511250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182859435).

130511250 is an abundant number, since it is smaller than the sum of its proper divisors (235207620).

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

130511250 is an equidigital number, since it uses as much as digits as its factorization.

130511250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1299 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 130511250 is about 11424.1520473075. The cubic root of 130511250 is about 507.2429073064.

Adding to 130511250 its reverse (52115031), we get a palindrome (182626281).

The spelling of 130511250 in words is "one hundred thirty million, five hundred eleven thousand, two hundred fifty".