256425100 has 18 divisors (see below), whose sum is σ = 556442684. Its totient is φ = 102570000.

The previous prime is 256425089. The next prime is 256425107. The reversal of 256425100 is 1524652.

256425100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (256425107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1282026 + ... + 1282225.

Almost surely, 2^256425100 is an apocalyptic number.

256425100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256425100 is an abundant number, since it is smaller than the sum of its proper divisors (300017584).

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

256425100 is a wasteful number, since it uses less digits than its factorization.

256425100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564265 (or 2564258 counting only the distinct ones).

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

The square root of 256425100 is about 16013.2788647422. The cubic root of 256425100 is about 635.3116869418.

Adding to 256425100 its reverse (1524652), we get a palindrome (257949752).

The spelling of 256425100 in words is "two hundred fifty-six million, four hundred twenty-five thousand, one hundred".