8017025478 has 64 divisors (see below), whose sum is σ = 21166437888. Its totient is φ = 1959851520.

The previous prime is 8017025449. The next prime is 8017025539. The reversal of 8017025478 is 8745207108.

It is a super-2 number, since 2×8017025478² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 502525 + ... + 518232.

It is an arithmetic number, because the mean of its divisors is an integer number (330725592).

Almost surely, 2^8017025478 is an apocalyptic number.

8017025478 is an abundant number, since it is smaller than the sum of its proper divisors (13149412410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8017025478 is a wasteful number, since it uses less digits than its factorization.

8017025478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020797.

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 8017025478 is about 89537.8438315330. The cubic root of 8017025478 is about 2001.4177845393.

The spelling of 8017025478 in words is "eight billion, seventeen million, twenty-five thousand, four hundred seventy-eight".