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8989877825 = 521894718979
BaseRepresentation
bin10000101111101011…
…01010011001000001
3212012112001002222222
420113311222121001
5121402402042300
64044020140425
7435530462225
oct102765523101
925175032888
108989877825
1138a36082a5
1218aa837715
13b03647c46
14613d3c785
1537937c785
hex217d6a641

8989877825 has 12 divisors (see below), whose sum is σ = 11148624240. Its totient is φ = 7191143760.

The previous prime is 8989877821. The next prime is 8989877839. The reversal of 8989877825 is 5287789898.

It is not a de Polignac number, because 8989877825 - 22 = 8989877821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8989877821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464186 + ... + 483164.

It is an arithmetic number, because the mean of its divisors is an integer number (929052020).

Almost surely, 28989877825 is an apocalyptic number.

It is an amenable number.

8989877825 is a deficient number, since it is larger than the sum of its proper divisors (2158746415).

8989877825 is a wasteful number, since it uses less digits than its factorization.

8989877825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37936 (or 37931 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 71.

The square root of 8989877825 is about 94814.9662500599. The cubic root of 8989877825 is about 2079.3037167253.

The spelling of 8989877825 in words is "eight billion, nine hundred eighty-nine million, eight hundred seventy-seven thousand, eight hundred twenty-five".

Divisors: 1 5 25 18947 18979 94735 94895 473675 474475 359595113 1797975565 8989877825