125533230321 has 4 divisors (see below), whose sum is σ = 167377640432. Its totient is φ = 83688820212.

The previous prime is 125533230313. The next prime is 125533230341. The reversal of 125533230321 is 123032335521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 125533230321 - 2³ = 125533230313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125533230311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20922205051 + ... + 20922205056.

It is an arithmetic number, because the mean of its divisors is an integer number (41844410108).

Almost surely, 2^125533230321 is an apocalyptic number.

It is an amenable number.

125533230321 is a deficient number, since it is larger than the sum of its proper divisors (41844410111).

125533230321 is an equidigital number, since it uses as much as digits as its factorization.

125533230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41844410110.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 125533230321 its reverse (123032335521), we get a palindrome (248565565842).

The spelling of 125533230321 in words is "one hundred twenty-five billion, five hundred thirty-three million, two hundred thirty thousand, three hundred twenty-one".