125472731639 has 8 divisors (see below), whose sum is σ = 133885829040. Its totient is φ = 117240561216.

The previous prime is 125472731621. The next prime is 125472731641. The reversal of 125472731639 is 936137274521.

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 125472731639 - 2⁸ = 125472731383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125472731609) 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 7 ways as a sum of consecutive naturals, for example, 45230312 + ... + 45233085.

It is an arithmetic number, because the mean of its divisors is an integer number (16735728630).

Almost surely, 2^125472731639 is an apocalyptic number.

125472731639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

125472731639 is a deficient number, since it is larger than the sum of its proper divisors (8413097401).

125472731639 is an equidigital number, since it uses as much as digits as its factorization.

125472731639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90463489.

The product of its digits is 1905120, while the sum is 50.

The spelling of 125472731639 in words is "one hundred twenty-five billion, four hundred seventy-two million, seven hundred thirty-one thousand, six hundred thirty-nine".