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25371138 = 2313325271
BaseRepresentation
bin110000011001…
…0001000000010
31202201222122210
41200302020002
522443334023
62303442550
7425436222
oct140621002
952658583
1025371138
1113359791
1285b6456
135344110
143526082
152362593
hex1832202

25371138 has 16 divisors (see below), whose sum is σ = 54645696. Its totient is φ = 7806480.

The previous prime is 25371131. The next prime is 25371187. The reversal of 25371138 is 83117352.

It is not an unprimeable number, because it can be changed into a prime (25371131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162558 + ... + 162713.

It is an arithmetic number, because the mean of its divisors is an integer number (3415356).

Almost surely, 225371138 is an apocalyptic number.

25371138 is an abundant number, since it is smaller than the sum of its proper divisors (29274558).

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

25371138 is a wasteful number, since it uses less digits than its factorization.

25371138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325289.

The product of its digits is 5040, while the sum is 30.

The square root of 25371138 is about 5036.9770696321. The cubic root of 25371138 is about 293.8416241722.

The spelling of 25371138 in words is "twenty-five million, three hundred seventy-one thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 13 26 39 78 325271 650542 975813 1951626 4228523 8457046 12685569 25371138