125555591147 has 24 divisors (see below), whose sum is σ = 151338351600. Its totient is φ = 103737848256.

The previous prime is 125555591143. The next prime is 125555591159. The reversal of 125555591147 is 741195555521.

It is not a de Polignac number, because 125555591147 - 2² = 125555591143 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125555591095 and 125555591104.

It is not an unprimeable number, because it can be changed into a prime (125555591143) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 799004 + ... + 943142.

It is an arithmetic number, because the mean of its divisors is an integer number (6305764650).

Almost surely, 2^125555591147 is an apocalyptic number.

125555591147 is a deficient number, since it is larger than the sum of its proper divisors (25782760453).

125555591147 is a wasteful number, since it uses less digits than its factorization.

125555591147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144795 (or 144788 counting only the distinct ones).

The product of its digits is 1575000, while the sum is 50.

The spelling of 125555591147 in words is "one hundred twenty-five billion, five hundred fifty-five million, five hundred ninety-one thousand, one hundred forty-seven".