125769967521 has 8 divisors (see below), whose sum is σ = 182938134624. Its totient is φ = 76224222720.

The previous prime is 125769967493. The next prime is 125769967529.

It is a happy number.

125769967521 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125769967521 - 2²¹ = 125767870369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125769967529) 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 7 ways as a sum of consecutive naturals, for example, 1905605536 + ... + 1905605601.

It is an arithmetic number, because the mean of its divisors is an integer number (22867266828).

Almost surely, 2^125769967521 is an apocalyptic number.

125769967521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125769967521 is a deficient number, since it is larger than the sum of its proper divisors (57168167103).

125769967521 is a wasteful number, since it uses less digits than its factorization.

125769967521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811211151.

The product of its digits is 14288400, while the sum is 60.

The spelling of 125769967521 in words is "one hundred twenty-five billion, seven hundred sixty-nine million, nine hundred sixty-seven thousand, five hundred twenty-one".