125145336421 has 16 divisors (see below), whose sum is σ = 145002628224. Its totient is φ = 105783300864.

The previous prime is 125145336413. The next prime is 125145336427. The reversal of 125145336421 is 124633541521.

It is a cyclic number.

It is not a de Polignac number, because 125145336421 - 2³ = 125145336413 is a prime.

It is a super-2 number, since 2×125145336421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125145336427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5258070 + ... + 5281816.

It is an arithmetic number, because the mean of its divisors is an integer number (9062664264).

Almost surely, 2^125145336421 is an apocalyptic number.

It is an amenable number.

125145336421 is a deficient number, since it is larger than the sum of its proper divisors (19857291803).

125145336421 is a wasteful number, since it uses less digits than its factorization.

125145336421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34140.

The product of its digits is 86400, while the sum is 37.

Adding to 125145336421 its reverse (124633541521), we get a palindrome (249778877942).

The spelling of 125145336421 in words is "one hundred twenty-five billion, one hundred forty-five million, three hundred thirty-six thousand, four hundred twenty-one".