125451544523 has 4 divisors (see below), whose sum is σ = 132831047160. Its totient is φ = 118072041888.

The previous prime is 125451544507. The next prime is 125451544607. The reversal of 125451544523 is 325445154521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125451544523 - 2⁴ = 125451544507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125451544423) 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, 3689751293 + ... + 3689751326.

It is an arithmetic number, because the mean of its divisors is an integer number (33207761790).

Almost surely, 2^125451544523 is an apocalyptic number.

125451544523 is a deficient number, since it is larger than the sum of its proper divisors (7379502637).

125451544523 is an equidigital number, since it uses as much as digits as its factorization.

125451544523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7379502636.

The product of its digits is 480000, while the sum is 41.

The spelling of 125451544523 in words is "one hundred twenty-five billion, four hundred fifty-one million, five hundred forty-four thousand, five hundred twenty-three".