125143322155421 has 8 divisors (see below), whose sum is σ = 131731759276320. Its totient is φ = 118555079682672.

The previous prime is 125143322155399. The next prime is 125143322155471. The reversal of 125143322155421 is 124551223341521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125143322155421 is a prime.

It is a super-3 number, since 3×125143322155421³ (a number of 43 digits) contains 333 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 (125143322155471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47341430 + ... + 49914903.

It is an arithmetic number, because the mean of its divisors is an integer number (16466469909540).

Almost surely, 2^{125143322155421} is an apocalyptic number.

It is an amenable number.

125143322155421 is a deficient number, since it is larger than the sum of its proper divisors (6588437120899).

125143322155421 is an equidigital number, since it uses as much as digits as its factorization.

125143322155421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97324075.

The product of its digits is 288000, while the sum is 41.

Adding to 125143322155421 its reverse (124551223341521), we get a palindrome (249694545496942).

The spelling of 125143322155421 in words is "one hundred twenty-five trillion, one hundred forty-three billion, three hundred twenty-two million, one hundred fifty-five thousand, four hundred twenty-one".