125891432 has 8 divisors (see below), whose sum is σ = 236046450. Its totient is φ = 62945712.

The previous prime is 125891431. The next prime is 125891453. The reversal of 125891432 is 234198521.

It can be written as a sum of positive squares in only one way, i.e., 87871876 + 38019556 = 9374^2 + 6166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 125891392 and 125891401.

It is not an unprimeable number, because it can be changed into a prime (125891431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7868207 + ... + 7868222.

Almost surely, 2^125891432 is an apocalyptic number.

It is an amenable number.

125891432 is a deficient number, since it is larger than the sum of its proper divisors (110155018).

125891432 is a wasteful number, since it uses less digits than its factorization.

125891432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15736435 (or 15736431 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 125891432 is about 11220.1351150510. The cubic root of 125891432 is about 501.1857617154.

The spelling of 125891432 in words is "one hundred twenty-five million, eight hundred ninety-one thousand, four hundred thirty-two".