125400256 has 28 divisors (see below), whose sum is σ = 249240040. Its totient is φ = 62599680.

The previous prime is 125400251. The next prime is 125400257. The reversal of 125400256 is 652004521.

It is a self number, because there is not a number n which added to its sum of digits gives 125400256.

It is not an unprimeable number, because it can be changed into a prime (125400251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53836 + ... + 56116.

It is an arithmetic number, because the mean of its divisors is an integer number (8901430).

Almost surely, 2^125400256 is an apocalyptic number.

125400256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125400256 is a deficient number, since it is larger than the sum of its proper divisors (123839784).

125400256 is an equidigital number, since it uses as much as digits as its factorization.

125400256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152 (or 3142 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 125400256 is about 11198.2255737237. The cubic root of 125400256 is about 500.5331060605.

Adding to 125400256 its reverse (652004521), we get a palindrome (777404777).

The spelling of 125400256 in words is "one hundred twenty-five million, four hundred thousand, two hundred fifty-six".