125111221523 has 16 divisors (see below), whose sum is σ = 132827268096. Its totient is φ = 117435077760.

The previous prime is 125111221519. The next prime is 125111221541. The reversal of 125111221523 is 325122111521.

It is a cyclic number.

It is not a de Polignac number, because 125111221523 - 2² = 125111221519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125111221492 and 125111221501.

It is not an unprimeable number, because it can be changed into a prime (125111221553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22374458 + ... + 22380048.

It is an arithmetic number, because the mean of its divisors is an integer number (8301704256).

Almost surely, 2^125111221523 is an apocalyptic number.

125111221523 is a deficient number, since it is larger than the sum of its proper divisors (7716046573).

125111221523 is a wasteful number, since it uses less digits than its factorization.

125111221523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8914.

The product of its digits is 1200, while the sum is 26.

The spelling of 125111221523 in words is "one hundred twenty-five billion, one hundred eleven million, two hundred twenty-one thousand, five hundred twenty-three".