125491456 has 18 divisors (see below), whose sum is σ = 250493222. Its totient is φ = 62745600.

The previous prime is 125491451. The next prime is 125491481. The reversal of 125491456 is 654194521.

It can be written as a sum of positive squares in only one way, i.e., 125081856 + 409600 = 11184^2 + 640^2 .

It is not an unprimeable number, because it can be changed into a prime (125491451) 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, 244845 + ... + 245356.

Almost surely, 2^125491456 is an apocalyptic number.

125491456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125491456 is a deficient number, since it is larger than the sum of its proper divisors (125001766).

125491456 is an frugal number, since it uses more digits than its factorization.

125491456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490217 (or 490203 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 125491456 is about 11202.2969073311. The cubic root of 125491456 is about 500.6544177678.

The spelling of 125491456 in words is "one hundred twenty-five million, four hundred ninety-one thousand, four hundred fifty-six".