6825561425 has 24 divisors (see below), whose sum is σ = 8917956000. Its totient is φ = 5167946880.

The previous prime is 6825561419. The next prime is 6825561427. The reversal of 6825561425 is 5241655286.

It is a happy number.

It is not a de Polignac number, because 6825561425 - 2⁴ = 6825561409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6825561427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 514526 + ... + 527624.

It is an arithmetic number, because the mean of its divisors is an integer number (371581500).

Almost surely, 2^6825561425 is an apocalyptic number.

It is an amenable number.

6825561425 is a deficient number, since it is larger than the sum of its proper divisors (2092394575).

6825561425 is a wasteful number, since it uses less digits than its factorization.

6825561425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14225 (or 14220 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The square root of 6825561425 is about 82616.9560380918. The cubic root of 6825561425 is about 1896.9073811744.

The spelling of 6825561425 in words is "six billion, eight hundred twenty-five million, five hundred sixty-one thousand, four hundred twenty-five".