125543452451 has 8 divisors (see below), whose sum is σ = 132170507520. Its totient is φ = 118918347912.

The previous prime is 125543452423. The next prime is 125543452453. The reversal of 125543452451 is 154254345521.

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 125543452451 - 2³⁴ = 108363583267 is a prime.

It is a super-3 number, since 3×125543452451³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125543452399 and 125543452408.

It is not an unprimeable number, because it can be changed into a prime (125543452453) 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, 354575 + ... + 613848.

It is an arithmetic number, because the mean of its divisors is an integer number (16521313440).

Almost surely, 2^125543452451 is an apocalyptic number.

125543452451 is a deficient number, since it is larger than the sum of its proper divisors (6627055069).

125543452451 is an equidigital number, since it uses as much as digits as its factorization.

125543452451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975265.

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

Adding to 125543452451 its reverse (154254345521), we get a palindrome (279797797972).

The spelling of 125543452451 in words is "one hundred twenty-five billion, five hundred forty-three million, four hundred fifty-two thousand, four hundred fifty-one".