125011421445 has 32 divisors (see below), whose sum is σ = 205595822592. Its totient is φ = 64835843072.

The previous prime is 125011421413. The next prime is 125011421461. The reversal of 125011421445 is 544124110521.

It is a cyclic number.

It is not a de Polignac number, because 125011421445 - 2⁵ = 125011421413 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 605949 + ... + 785618.

It is an arithmetic number, because the mean of its divisors is an integer number (6424869456).

Almost surely, 2^125011421445 is an apocalyptic number.

125011421445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125011421445 is a deficient number, since it is larger than the sum of its proper divisors (80584401147).

125011421445 is a wasteful number, since it uses less digits than its factorization.

125011421445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391741.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 125011421445 its reverse (544124110521), we get a palindrome (669135531966).

The spelling of 125011421445 in words is "one hundred twenty-five billion, eleven million, four hundred twenty-one thousand, four hundred forty-five".