1251541230 has 64 divisors (see below), whose sum is σ = 3110849280. Its totient is φ = 322027776.

The previous prime is 1251541223. The next prime is 1251541231. The reversal of 1251541230 is 321451521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1251541230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251541231) 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 31 ways as a sum of consecutive naturals, for example, 101226 + ... + 112914.

It is an arithmetic number, because the mean of its divisors is an integer number (48607020).

Almost surely, 2^1251541230 is an apocalyptic number.

1251541230 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 1251541230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555424640).

1251541230 is an abundant number, since it is smaller than the sum of its proper divisors (1859308050).

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

1251541230 is a wasteful number, since it uses less digits than its factorization.

1251541230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11825.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1251541230 is about 35377.1286285363. The cubic root of 1251541230 is about 1077.6598937642.

Adding to 1251541230 its reverse (321451521), we get a palindrome (1572992751).

The spelling of 1251541230 in words is "one billion, two hundred fifty-one million, five hundred forty-one thousand, two hundred thirty".