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20068863025 = 523347239843
BaseRepresentation
bin10010101100001100…
…101000110000110001
31220210122002212120011
4102230030220300301
5312100112104100
613115225214521
71310216343511
oct225414506061
956718085504
1020068863025
118569393912
123a81031441
131b7aa38aa3
14d854cd841
157c6d1ebba
hex4ac328c31

20068863025 has 12 divisors (see below), whose sum is σ = 24892929072. Its totient is φ = 16050226640.

The previous prime is 20068863007. The next prime is 20068863037. The reversal of 20068863025 is 52036886002.

It is a de Polignac number, because none of the positive numbers 2k-20068863025 is a prime.

It is a Duffinian number.

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, 36247 + ... + 203596.

It is an arithmetic number, because the mean of its divisors is an integer number (2074410756).

Almost surely, 220068863025 is an apocalyptic number.

20068863025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20068863025 is a deficient number, since it is larger than the sum of its proper divisors (4824066047).

20068863025 is a wasteful number, since it uses less digits than its factorization.

20068863025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243200 (or 243195 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 20068863025 in words is "twenty billion, sixty-eight million, eight hundred sixty-three thousand, twenty-five".

Divisors: 1 5 25 3347 16735 83675 239843 1199215 5996075 802754521 4013772605 20068863025