126725232133 has 4 divisors (see below), whose sum is σ = 126726356128. Its totient is φ = 126724108140.

The previous prime is 126725232131. The next prime is 126725232143. The reversal of 126725232133 is 331232527621.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 331232527621 = 110567 ⋅2995763.

It is a cyclic number.

It is not a de Polignac number, because 126725232133 - 2¹ = 126725232131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126725232092 and 126725232101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126725232131) 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, 371313 + ... + 625558.

It is an arithmetic number, because the mean of its divisors is an integer number (31681589032).

Almost surely, 2^126725232133 is an apocalyptic number.

It is an amenable number.

126725232133 is a deficient number, since it is larger than the sum of its proper divisors (1123995).

126725232133 is an equidigital number, since it uses as much as digits as its factorization.

126725232133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123994.

The product of its digits is 90720, while the sum is 37.

Adding to 126725232133 its reverse (331232527621), we get a palindrome (457957759754).

The spelling of 126725232133 in words is "one hundred twenty-six billion, seven hundred twenty-five million, two hundred thirty-two thousand, one hundred thirty-three".