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25663542 = 234277257
BaseRepresentation
bin110000111100…
…1100000110110
31210021211202120
41201321200312
523032213132
62314020410
7431064552
oct141714066
953254676
1025663542
1113539443
128717706
135417238
1435a0862
1523be02c
hex1879836

25663542 has 8 divisors (see below), whose sum is σ = 51327096. Its totient is φ = 8554512.

The previous prime is 25663541. The next prime is 25663559. The reversal of 25663542 is 24536652.

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

25663542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25663541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138623 + ... + 2138634.

It is an arithmetic number, because the mean of its divisors is an integer number (6415887).

Almost surely, 225663542 is an apocalyptic number.

25663542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25663542 is a wasteful number, since it uses less digits than its factorization.

25663542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277262.

The product of its digits is 43200, while the sum is 33.

The square root of 25663542 is about 5065.9196598446. The cubic root of 25663542 is about 294.9661629293.

The spelling of 25663542 in words is "twenty-five million, six hundred sixty-three thousand, five hundred forty-two".

Divisors: 1 2 3 6 4277257 8554514 12831771 25663542