1291425050 has 24 divisors (see below), whose sum is σ = 2404459200. Its totient is φ = 516052080.

The previous prime is 1291425017. The next prime is 1291425127. The reversal of 1291425050 is 505241921.

1291425050 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39521 + ... + 64379.

It is an arithmetic number, because the mean of its divisors is an integer number (100185800).

Almost surely, 2^1291425050 is an apocalyptic number.

1291425050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1291425050 is a deficient number, since it is larger than the sum of its proper divisors (1113034150).

1291425050 is a wasteful number, since it uses less digits than its factorization.

1291425050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25910 (or 25905 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1291425050 is about 35936.4028528176. The cubic root of 1291425050 is about 1088.9879363871.

Adding to 1291425050 its reverse (505241921), we get a palindrome (1796666971).

The spelling of 1291425050 in words is "one billion, two hundred ninety-one million, four hundred twenty-five thousand, fifty".