8424646646425 has 24 divisors (see below), whose sum is σ = 10998741997760. Its totient is φ = 6383624385600.

The previous prime is 8424646646411. The next prime is 8424646646461. The reversal of 8424646646425 is 5246466464248.

It is not a de Polignac number, because 8424646646425 - 2²³ = 8424638257817 is a prime.

It is a super-2 number, since 2×8424646646425² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313135 + ... + 4116715.

Almost surely, 2^{8424646646425} is an apocalyptic number.

It is an amenable number.

8424646646425 is a deficient number, since it is larger than the sum of its proper divisors (2574095351335).

8424646646425 is a wasteful number, since it uses less digits than its factorization.

8424646646425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808273 (or 3808268 counting only the distinct ones).

The product of its digits is 212336640, while the sum is 61.

The spelling of 8424646646425 in words is "eight trillion, four hundred twenty-four billion, six hundred forty-six million, six hundred forty-six thousand, four hundred twenty-five".