125449783 has 4 divisors (see below), whose sum is σ = 132829200. Its totient is φ = 118070368.

The previous prime is 125449771. The next prime is 125449801. The reversal of 125449783 is 387944521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125449783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125449703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3689683 + ... + 3689716.

It is an arithmetic number, because the mean of its divisors is an integer number (33207300).

Almost surely, 2^125449783 is an apocalyptic number.

125449783 is a deficient number, since it is larger than the sum of its proper divisors (7379417).

125449783 is an equidigital number, since it uses as much as digits as its factorization.

125449783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7379416.

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

The square root of 125449783 is about 11200.4367325565. The cubic root of 125449783 is about 500.5989927954.

The spelling of 125449783 in words is "one hundred twenty-five million, four hundred forty-nine thousand, seven hundred eighty-three".