125403455451 has 8 divisors (see below), whose sum is σ = 167227933264. Its totient is φ = 83590640640.

The previous prime is 125403455431. The next prime is 125403455521. The reversal of 125403455451 is 154554304521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125403455451 - 2⁷ = 125403455323 is a prime.

It is a super-2 number, since 2×125403455451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125403455431) 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, 2890630 + ... + 2933691.

It is an arithmetic number, because the mean of its divisors is an integer number (20903491658).

Almost surely, 2^125403455451 is an apocalyptic number.

125403455451 is a deficient number, since it is larger than the sum of its proper divisors (41824477813).

125403455451 is an equidigital number, since it uses as much as digits as its factorization.

125403455451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831501.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 125403455451 its reverse (154554304521), we get a palindrome (279957759972).

The spelling of 125403455451 in words is "one hundred twenty-five billion, four hundred three million, four hundred fifty-five thousand, four hundred fifty-one".