125961608606 has 4 divisors (see below), whose sum is σ = 188942412912. Its totient is φ = 62980804302.

The previous prime is 125961608599. The next prime is 125961608623. The reversal of 125961608606 is 606806169521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×125961608606² (a number of 23 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 31490402150 + ... + 31490402153.

It is an arithmetic number, because the mean of its divisors is an integer number (47235603228).

Almost surely, 2^125961608606 is an apocalyptic number.

125961608606 is a deficient number, since it is larger than the sum of its proper divisors (62980804306).

125961608606 is an equidigital number, since it uses as much as digits as its factorization.

125961608606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62980804305.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 125961608606 in words is "one hundred twenty-five billion, nine hundred sixty-one million, six hundred eight thousand, six hundred six".