42556456225 has 12 divisors (see below), whose sum is σ = 52790220540. Its totient is φ = 34032123200.

The previous prime is 42556456213. The next prime is 42556456237. The reversal of 42556456225 is 52265465524.

It is an interprime number because it is at equal distance from previous prime (42556456213) and next prime (42556456237).

It can be written as a sum of positive squares in 6 ways, for example, as 5848578576 + 36707877649 = 76476^2 + 191593^2 .

It is not a de Polignac number, because 42556456225 - 2⁹ = 42556455713 is a prime.

It is a super-2 number, since 2×42556456225² (a number of 22 digits) contains 22 as substring.

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, 259210 + ... + 390259.

It is an arithmetic number, because the mean of its divisors is an integer number (4399185045).

Almost surely, 2^42556456225 is an apocalyptic number.

It is an amenable number.

42556456225 is a deficient number, since it is larger than the sum of its proper divisors (10233764315).

42556456225 is a wasteful number, since it uses less digits than its factorization.

42556456225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652100 (or 652095 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 46.

The spelling of 42556456225 in words is "forty-two billion, five hundred fifty-six million, four hundred fifty-six thousand, two hundred twenty-five".