125331905603521 has 8 divisors (see below), whose sum is σ = 125999992952064. Its totient is φ = 124664765227440.

The previous prime is 125331905603501. The next prime is 125331905603537. The reversal of 125331905603521 is 125306509133521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 125331905603521 - 2⁴³ = 116535812581313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125331905603501) 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, 236477710 + ... + 237007111.

It is an arithmetic number, because the mean of its divisors is an integer number (15749999119008).

Almost surely, 2^{125331905603521} is an apocalyptic number.

It is an amenable number.

125331905603521 is a deficient number, since it is larger than the sum of its proper divisors (668087348543).

125331905603521 is a wasteful number, since it uses less digits than its factorization.

125331905603521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473486231.

The product of its (nonzero) digits is 729000, while the sum is 46.

The spelling of 125331905603521 in words is "one hundred twenty-five trillion, three hundred thirty-one billion, nine hundred five million, six hundred three thousand, five hundred twenty-one".