125671432381 has 8 divisors (see below), whose sum is σ = 137121388704. Its totient is φ = 114225689520.

The previous prime is 125671432373. The next prime is 125671432387. The reversal of 125671432381 is 183234176521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 125671432381 - 2³ = 125671432373 is a prime.

It is a super-2 number, since 2×125671432381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125671432387) 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, 990835 + ... + 1110448.

It is an arithmetic number, because the mean of its divisors is an integer number (17140173588).

Almost surely, 2^125671432381 is an apocalyptic number.

125671432381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125671432381 is a deficient number, since it is larger than the sum of its proper divisors (11449956323).

125671432381 is a wasteful number, since it uses less digits than its factorization.

125671432381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106731.

The product of its digits is 241920, while the sum is 43.

The spelling of 125671432381 in words is "one hundred twenty-five billion, six hundred seventy-one million, four hundred thirty-two thousand, three hundred eighty-one".