125557456 has 20 divisors (see below), whose sum is σ = 243560800. Its totient is φ = 62703072.

The previous prime is 125557451. The next prime is 125557507. The reversal of 125557456 is 654755521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125557451) 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, 10435 + ... + 18973.

It is an arithmetic number, because the mean of its divisors is an integer number (12178040).

Almost surely, 2^125557456 is an apocalyptic number.

125557456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125557456 is a deficient number, since it is larger than the sum of its proper divisors (118003344).

125557456 is an equidigital number, since it uses as much as digits as its factorization.

125557456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466 (or 9460 counting only the distinct ones).

The product of its digits is 210000, while the sum is 40.

The square root of 125557456 is about 11205.2423445457. The cubic root of 125557456 is about 500.7421724816.

The spelling of 125557456 in words is "one hundred twenty-five million, five hundred fifty-seven thousand, four hundred fifty-six".