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25379138 = 238932621
BaseRepresentation
bin110000011010…
…0000101000010
31202202101122002
41200310011002
522444113023
62303544002
7425501441
oct140640502
952671562
1025379138
11133647a4
1285bb002
135347955
143528d58
152364b28
hex1834142

25379138 has 8 divisors (see below), whose sum is σ = 38167740. Its totient is φ = 12656560.

The previous prime is 25379119. The next prime is 25379141. The reversal of 25379138 is 83197352.

It can be written as a sum of positive squares in 2 ways, for example, as 25170289 + 208849 = 5017^2 + 457^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15533 + ... + 17088.

Almost surely, 225379138 is an apocalyptic number.

25379138 is a deficient number, since it is larger than the sum of its proper divisors (12788602).

25379138 is a wasteful number, since it uses less digits than its factorization.

25379138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33012.

The product of its digits is 45360, while the sum is 38.

The square root of 25379138 is about 5037.7711341426. The cubic root of 25379138 is about 293.8725055351.

The spelling of 25379138 in words is "twenty-five million, three hundred seventy-nine thousand, one hundred thirty-eight".

Divisors: 1 2 389 778 32621 65242 12689569 25379138