125011421450 has 24 divisors (see below), whose sum is σ = 233025671340. Its totient is φ = 49896089600.

The previous prime is 125011421413. The next prime is 125011421461. The reversal of 125011421450 is 54124110521.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10578739609 + 114432681841 = 102853^2 + 338279^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2688695 + ... + 2734794.

Almost surely, 2^125011421450 is an apocalyptic number.

125011421450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125011421450 is a deficient number, since it is larger than the sum of its proper divisors (108014249890).

125011421450 is a wasteful number, since it uses less digits than its factorization.

125011421450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423962 (or 5423957 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 125011421450 its reverse (54124110521), we get a palindrome (179135531971).

The spelling of 125011421450 in words is "one hundred twenty-five billion, eleven million, four hundred twenty-one thousand, four hundred fifty".