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20625276995 = 561310921751
BaseRepresentation
bin10011001101010111…
…001100000001000011
31222020102002122000222
4103031113030001003
5314220032330440
613250343133255
71330053650621
oct231527140103
958212078028
1020625276995
118824481974
123bb744422b
131c390b381b
14dd936c511
1580aacd2b5
hex4cd5cc043

20625276995 has 16 divisors (see below), whose sum is σ = 25165323840. Its totient is φ = 16223760000.

The previous prime is 20625276923. The next prime is 20625277033. The reversal of 20625276995 is 59967252602.

It is a de Polignac number, because none of the positive numbers 2k-20625276995 is a prime.

It is a super-2 number, since 2×206252769952 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937370 + ... + 959120.

It is an arithmetic number, because the mean of its divisors is an integer number (1572832740).

Almost surely, 220625276995 is an apocalyptic number.

20625276995 is a deficient number, since it is larger than the sum of its proper divisors (4540046845).

20625276995 is a wasteful number, since it uses less digits than its factorization.

20625276995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24926.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 20625276995 in words is "twenty billion, six hundred twenty-five million, two hundred seventy-six thousand, nine hundred ninety-five".

Divisors: 1 5 61 305 3109 15545 21751 108755 189649 948245 1326811 6634055 67623859 338119295 4125055399 20625276995