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20625062951 = 191723630023
BaseRepresentation
bin10011001101010110…
…010111110000100111
31222020101200202102102
4103031112113300213
5314220004003301
613250334402315
71330052066603
oct231526276047
958211622372
1020625062951
118824346079
123bb736039b
131c3903a27c
14dd9314503
1580aa89b6b
hex4cd597c27

20625062951 has 8 divisors (see below), whose sum is σ = 21723227520. Its totient is φ = 19528161912.

The previous prime is 20625062917. The next prime is 20625063031. The reversal of 20625062951 is 15926052602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20625062951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625062851) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 282275 + ... + 347748.

It is an arithmetic number, because the mean of its divisors is an integer number (2715403440).

Almost surely, 220625062951 is an apocalyptic number.

20625062951 is a deficient number, since it is larger than the sum of its proper divisors (1098164569).

20625062951 is a wasteful number, since it uses less digits than its factorization.

20625062951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631765.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 20625062951 in words is "twenty billion, six hundred twenty-five million, sixty-two thousand, nine hundred fifty-one".

Divisors: 1 19 1723 32737 630023 11970437 1085529629 20625062951