125240311090205 has 8 divisors (see below), whose sum is σ = 150873152972472. Its totient is φ = 99802395762688.

The previous prime is 125240311090189. The next prime is 125240311090249. The reversal of 125240311090205 is 502090113042521.

It can be written as a sum of positive squares in 4 ways, for example, as 65311563544249 + 59928747545956 = 8081557^2 + 7741366^2 .

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 125240311090205 - 2⁴ = 125240311090189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48731637272 + ... + 48731639841.

It is an arithmetic number, because the mean of its divisors is an integer number (18859144121559).

Almost surely, 2^{125240311090205} is an apocalyptic number.

It is an amenable number.

125240311090205 is a deficient number, since it is larger than the sum of its proper divisors (25632841882267).

125240311090205 is an equidigital number, since it uses as much as digits as its factorization.

125240311090205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97463277375.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 125240311090205 in words is "one hundred twenty-five trillion, two hundred forty billion, three hundred eleven million, ninety thousand, two hundred five".