425655081 has 56 divisors (see below), whose sum is σ = 682032000. Its totient is φ = 264749472.

The previous prime is 425655073. The next prime is 425655101. The reversal of 425655081 is 180556524.

425655081 is a `hidden beast` number, since 4 + 25 + 6 + 550 + 81 = 666.

It is not a de Polignac number, because 425655081 - 2³ = 425655073 is a prime.

It is a super-3 number, since 3×425655081³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (425655001) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1094035 + ... + 1094423.

Almost surely, 2^425655081 is an apocalyptic number.

It is an amenable number.

425655081 is a deficient number, since it is larger than the sum of its proper divisors (256376919).

425655081 is an equidigital number, since it uses as much as digits as its factorization.

425655081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 425655081 is about 20631.4100584521. The cubic root of 425655081 is about 752.2333906864.

The spelling of 425655081 in words is "four hundred twenty-five million, six hundred fifty-five thousand, eighty-one".