125195707645 has 8 divisors (see below), whose sum is σ = 153899114040. Its totient is φ = 97713722880.

The previous prime is 125195707591. The next prime is 125195707661. The reversal of 125195707645 is 546707591521.

It can be written as a sum of positive squares in 4 ways, for example, as 5517072729 + 119678634916 = 74277^2 + 345946^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125195707645 - 2⁷ = 125195707517 is a prime.

It is a super-2 number, since 2×125195707645² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125195707592 and 125195707601.

It is a congruent number.

It is an unprimeable number.

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, 305355180 + ... + 305355589.

It is an arithmetic number, because the mean of its divisors is an integer number (19237389255).

Almost surely, 2^125195707645 is an apocalyptic number.

It is an amenable number.

125195707645 is a deficient number, since it is larger than the sum of its proper divisors (28703406395).

125195707645 is an equidigital number, since it uses as much as digits as its factorization.

125195707645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610710815.

The product of its (nonzero) digits is 2646000, while the sum is 52.

The spelling of 125195707645 in words is "one hundred twenty-five billion, one hundred ninety-five million, seven hundred seven thousand, six hundred forty-five".