1725889856 has 14 divisors (see below), whose sum is σ = 3424812810. Its totient is φ = 862944896.

The previous prime is 1725889849. The next prime is 1725889859. The reversal of 1725889856 is 6589885271.

It can be written as a sum of positive squares in only one way, i.e., 1430049856 + 295840000 = 37816^2 + 17200^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1725889795 and 1725889804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1725889859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13483451 + ... + 13483578.

Almost surely, 2^1725889856 is an apocalyptic number.

1725889856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1725889856 is a deficient number, since it is larger than the sum of its proper divisors (1698922954).

1725889856 is an equidigital number, since it uses as much as digits as its factorization.

1725889856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26967041 (or 26967031 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 59.

The square root of 1725889856 is about 41543.8305407674. The cubic root of 1725889856 is about 1199.5113417787.

The spelling of 1725889856 in words is "one billion, seven hundred twenty-five million, eight hundred eighty-nine thousand, eight hundred fifty-six".