8561425 has 12 divisors (see below), whose sum is σ = 10959616. Its totient is φ = 6627600.

The previous prime is 8561417. The next prime is 8561437. The reversal of 8561425 is 5241658.

It is not a de Polignac number, because 8561425 - 2³ = 8561417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4749 + ... + 6298.

Almost surely, 2^8561425 is an apocalyptic number.

It is an amenable number.

8561425 is a deficient number, since it is larger than the sum of its proper divisors (2398191).

8561425 is a wasteful number, since it uses less digits than its factorization.

8561425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088 (or 11083 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 8561425 is about 2925.9912850178. The cubic root of 8561425 is about 204.5731749936.

The spelling of 8561425 in words is "eight million, five hundred sixty-one thousand, four hundred twenty-five".