125010422521 has 8 divisors (see below), whose sum is σ = 126608684040. Its totient is φ = 123416464512.

The previous prime is 125010422513. The next prime is 125010422531. The reversal of 125010422521 is 125224010521.

It can be written as a sum of positive squares in 4 ways, for example, as 1571329600 + 123439092921 = 39640^2 + 351339^2 .

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 125010422521 - 2³ = 125010422513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125010422531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017390 + ... + 1133623.

It is an arithmetic number, because the mean of its divisors is an integer number (15826085505).

Almost surely, 2^125010422521 is an apocalyptic number.

It is an amenable number.

125010422521 is a deficient number, since it is larger than the sum of its proper divisors (1598261519).

125010422521 is an equidigital number, since it uses as much as digits as its factorization.

125010422521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151755.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 125010422521 in words is "one hundred twenty-five billion, ten million, four hundred twenty-two thousand, five hundred twenty-one".