125315135641 has 4 divisors (see below), whose sum is σ = 125523647284. Its totient is φ = 125106624000.

The previous prime is 125315135633. The next prime is 125315135651. The reversal of 125315135641 is 146531513521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146531513521 = 54493 ⋅2688997.

It can be written as a sum of positive squares in 2 ways, for example, as 93531377241 + 31783758400 = 305829^2 + 178280^2 .

It is a cyclic number.

It is not a de Polignac number, because 125315135641 - 2³ = 125315135633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125315135641.

It is not an unprimeable number, because it can be changed into a prime (125315135651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104254920 + ... + 104256121.

It is an arithmetic number, because the mean of its divisors is an integer number (31380911821).

Almost surely, 2^125315135641 is an apocalyptic number.

It is an amenable number.

125315135641 is a deficient number, since it is larger than the sum of its proper divisors (208511643).

125315135641 is an equidigital number, since it uses as much as digits as its factorization.

125315135641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208511642.

The product of its digits is 54000, while the sum is 37.

The spelling of 125315135641 in words is "one hundred twenty-five billion, three hundred fifteen million, one hundred thirty-five thousand, six hundred forty-one".