125445352642 has 4 divisors (see below), whose sum is σ = 188168028966. Its totient is φ = 62722676320.

The previous prime is 125445352619. The next prime is 125445352717. The reversal of 125445352642 is 246253544521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246253544521 = 257993 ⋅954497.

It can be written as a sum of positive squares in only one way, i.e., 97455728041 + 27989624601 = 312179^2 + 167301^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31361338159 + ... + 31361338162.

Almost surely, 2^125445352642 is an apocalyptic number.

125445352642 is a deficient number, since it is larger than the sum of its proper divisors (62722676324).

125445352642 is an equidigital number, since it uses as much as digits as its factorization.

125445352642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62722676323.

The product of its digits is 1152000, while the sum is 43.

The spelling of 125445352642 in words is "one hundred twenty-five billion, four hundred forty-five million, three hundred fifty-two thousand, six hundred forty-two".