125403456 has 28 divisors (see below), whose sum is σ = 331797152. Its totient is φ = 41801088.

The previous prime is 125403451. The next prime is 125403469. The reversal of 125403456 is 654304521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125403451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326380 + ... + 326763.

Almost surely, 2^125403456 is an apocalyptic number.

125403456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125403456 is an abundant number, since it is smaller than the sum of its proper divisors (206393696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125403456 is an equidigital number, since it uses as much as digits as its factorization.

125403456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653158 (or 653148 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 125403456 is about 11198.3684525917. The cubic root of 125403456 is about 500.5373636071.

Adding to 125403456 its reverse (654304521), we get a palindrome (779707977).

The spelling of 125403456 in words is "one hundred twenty-five million, four hundred three thousand, four hundred fifty-six".