8561313425 has 24 divisors (see below), whose sum is σ = 12246019776. Its totient is φ = 5815736640.

The previous prime is 8561313421. The next prime is 8561313427. The reversal of 8561313425 is 5243131658.

It is a happy number.

It is not a de Polignac number, because 8561313425 - 2² = 8561313421 is a prime.

It is a super-2 number, since 2×8561313425² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8561313421) 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, 209882 + ... + 247331.

It is an arithmetic number, because the mean of its divisors is an integer number (510250824).

Almost surely, 2^8561313425 is an apocalyptic number.

It is an amenable number.

8561313425 is a deficient number, since it is larger than the sum of its proper divisors (3684706351).

8561313425 is a wasteful number, since it uses less digits than its factorization.

8561313425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457337 (or 457332 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 8561313425 is about 92527.3658168220. The cubic root of 8561313425 is about 2045.7228630384.

The spelling of 8561313425 in words is "eight billion, five hundred sixty-one million, three hundred thirteen thousand, four hundred twenty-five".