125181065522 has 18 divisors (see below), whose sum is σ = 191887790463. Its totient is φ = 61247310972.

The previous prime is 125181065519. The next prime is 125181065531. The reversal of 125181065522 is 225560181521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62590532761 + 62590532761 = 250181^2 + 250181^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=250181.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23514353 + ... + 23519675.

Almost surely, 2^125181065522 is an apocalyptic number.

125181065522 is a deficient number, since it is larger than the sum of its proper divisors (66706724941).

125181065522 is an frugal number, since it uses more digits than its factorization.

125181065522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10742 (or 5372 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 38.

The spelling of 125181065522 in words is "one hundred twenty-five billion, one hundred eighty-one million, sixty-five thousand, five hundred twenty-two".