125004171749 has 8 divisors (see below), whose sum is σ = 129329020920. Its totient is φ = 120680280000.

The previous prime is 125004171659. The next prime is 125004171779. The reversal of 125004171749 is 947171400521.

It can be written as a sum of positive squares in 4 ways, for example, as 6518140225 + 118486031524 = 80735^2 + 344218^2 .

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 125004171749 - 2²⁰ = 125003123173 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 (125004171779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31499 + ... + 500999.

It is an arithmetic number, because the mean of its divisors is an integer number (16166127615).

Almost surely, 2^125004171749 is an apocalyptic number.

It is an amenable number.

125004171749 is a deficient number, since it is larger than the sum of its proper divisors (4324849171).

125004171749 is an equidigital number, since it uses as much as digits as its factorization.

125004171749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478711.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 125004171749 in words is "one hundred twenty-five billion, four million, one hundred seventy-one thousand, seven hundred forty-nine".