125694959194489 has 16 divisors (see below), whose sum is σ = 139116732120000. Its totient is φ = 113088440243520.

The previous prime is 125694959194487. The next prime is 125694959194499. The reversal of 125694959194489 is 984491959496521.

It is a cyclic number.

It is not a de Polignac number, because 125694959194489 - 2¹ = 125694959194487 is a prime.

It is a super-2 number, since 2×125694959194489² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125694959194487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1869814939 + ... + 1869882160.

It is an arithmetic number, because the mean of its divisors is an integer number (8694795757500).

Almost surely, 2^{125694959194489} is an apocalyptic number.

125694959194489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

125694959194489 is a deficient number, since it is larger than the sum of its proper divisors (13421772925511).

125694959194489 is a wasteful number, since it uses less digits than its factorization.

125694959194489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739697208.

The product of its digits is 9069926400, while the sum is 85.

The spelling of 125694959194489 in words is "one hundred twenty-five trillion, six hundred ninety-four billion, nine hundred fifty-nine million, one hundred ninety-four thousand, four hundred eighty-nine".