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20025606471 = 313513477089
BaseRepresentation
bin10010101001100111…
…101000000101000111
31220200121201012201120
4102221213220011013
5312003023401341
613111042125023
71306152563223
oct225147500507
956617635646
1020025606471
118546a295a2
123a6a650773
131b71aa1bb0
14d7d86d783
157c3128066
hex4a99e8147

20025606471 has 8 divisors (see below), whose sum is σ = 28754717040. Its totient is φ = 12323450112.

The previous prime is 20025606439. The next prime is 20025606487. The reversal of 20025606471 is 17460652002.

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

It is not a de Polignac number, because 20025606471 - 25 = 20025606439 is a prime.

It is a super-3 number, since 3×200256064713 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025606421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256738506 + ... + 256738583.

It is an arithmetic number, because the mean of its divisors is an integer number (3594339630).

Almost surely, 220025606471 is an apocalyptic number.

20025606471 is a deficient number, since it is larger than the sum of its proper divisors (8729110569).

20025606471 is a wasteful number, since it uses less digits than its factorization.

20025606471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513477105.

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 20025606471 in words is "twenty billion, twenty-five million, six hundred six thousand, four hundred seventy-one".

Divisors: 1 3 13 39 513477089 1540431267 6675202157 20025606471