125403452313 has 4 divisors (see below), whose sum is σ = 167204603088. Its totient is φ = 83602301540.

The previous prime is 125403452249. The next prime is 125403452323. The reversal of 125403452313 is 313254304521.

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 a cyclic number.

It is not a de Polignac number, because 125403452313 - 2⁶ = 125403452249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125403452323) 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, 20900575383 + ... + 20900575388.

It is an arithmetic number, because the mean of its divisors is an integer number (41801150772).

Almost surely, 2^125403452313 is an apocalyptic number.

It is an amenable number.

125403452313 is a deficient number, since it is larger than the sum of its proper divisors (41801150775).

125403452313 is an equidigital number, since it uses as much as digits as its factorization.

125403452313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41801150774.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 125403452313 its reverse (313254304521), we get a palindrome (438657756834).

The spelling of 125403452313 in words is "one hundred twenty-five billion, four hundred three million, four hundred fifty-two thousand, three hundred thirteen".