1251415050 has 192 divisors, whose sum is σ = 3612625920. Its totient is φ = 284359680.

The previous prime is 1251415043. The next prime is 1251415051. The reversal of 1251415050 is 505141521.

It is a self number, because there is not a number n which added to its sum of digits gives 1251415050.

It is not an unprimeable number, because it can be changed into a prime (1251415051) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1113789 + ... + 1114911.

It is an arithmetic number, because the mean of its divisors is an integer number (18815760).

Almost surely, 2^1251415050 is an apocalyptic number.

1251415050 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 1251415050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1806312960).

1251415050 is an abundant number, since it is smaller than the sum of its proper divisors (2361210870).

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

1251415050 is a wasteful number, since it uses less digits than its factorization.

1251415050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1251415050 is about 35375.3452279974. The cubic root of 1251415050 is about 1077.6236761012.

Adding to 1251415050 its reverse (505141521), we get a palindrome (1756556571).

The spelling of 1251415050 in words is "one billion, two hundred fifty-one million, four hundred fifteen thousand, fifty".