18817422495025 has 48 divisors (see below), whose sum is σ = 29441743607808. Its totient is φ = 11589011784000.

The previous prime is 18817422495007. The next prime is 18817422495049. The reversal of 18817422495025 is 52059422471881.

It is not a de Polignac number, because 18817422495025 - 2¹⁵ = 18817422462257 is a prime.

It is a super-2 number, since 2×18817422495025² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58727481 + ... + 59047030.

It is an arithmetic number, because the mean of its divisors is an integer number (613369658496).

Almost surely, 2^{18817422495025} is an apocalyptic number.

It is an amenable number.

18817422495025 is a deficient number, since it is larger than the sum of its proper divisors (10624321112783).

18817422495025 is a wasteful number, since it uses less digits than its factorization.

18817422495025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117774622 (or 117774617 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 58.

The spelling of 18817422495025 in words is "eighteen trillion, eight hundred seventeen billion, four hundred twenty-two million, four hundred ninety-five thousand, twenty-five".