125456772473 has 4 divisors (see below), whose sum is σ = 126866399220. Its totient is φ = 124047145728.

The previous prime is 125456772433. The next prime is 125456772517. The reversal of 125456772473 is 374277654521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374277654521 = 41 ⋅9128723281.

It can be written as a sum of positive squares in 2 ways, for example, as 73174578064 + 52282194409 = 270508^2 + 228653^2 .

It is a cyclic number.

It is not a de Polignac number, because 125456772473 - 2²² = 125452578169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125456772433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704813240 + ... + 704813417.

It is an arithmetic number, because the mean of its divisors is an integer number (31716599805).

Almost surely, 2^125456772473 is an apocalyptic number.

It is an amenable number.

125456772473 is a deficient number, since it is larger than the sum of its proper divisors (1409626747).

125456772473 is an equidigital number, since it uses as much as digits as its factorization.

125456772473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409626746.

The product of its digits is 9878400, while the sum is 53.

The spelling of 125456772473 in words is "one hundred twenty-five billion, four hundred fifty-six million, seven hundred seventy-two thousand, four hundred seventy-three".