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25741381 = 37897817
BaseRepresentation
bin110001000110…
…0100001000101
31210102210112111
41202030201011
523042211011
62315421021
7431540521
oct142144105
953383474
1025741381
1113591976
128754771
1354437b3
1435c0d81
1523d7121
hex188c845

25741381 has 8 divisors (see below), whose sum is σ = 26737560. Its totient is φ = 24761088.

The previous prime is 25741379. The next prime is 25741427. The reversal of 25741381 is 18314752.

It can be written as a sum of positive squares in 4 ways, for example, as 188356 + 25553025 = 434^2 + 5055^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25741381 - 21 = 25741379 is a prime.

It is a super-2 number, since 2×257413812 = 1325237391574322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25741981) 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, 616 + ... + 7201.

It is an arithmetic number, because the mean of its divisors is an integer number (3342195).

Almost surely, 225741381 is an apocalyptic number.

It is an amenable number.

25741381 is a deficient number, since it is larger than the sum of its proper divisors (996179).

25741381 is an equidigital number, since it uses as much as digits as its factorization.

25741381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7943.

The product of its digits is 6720, while the sum is 31.

The square root of 25741381 is about 5073.5964561640. The cubic root of 25741381 is about 295.2640783836.

The spelling of 25741381 in words is "twenty-five million, seven hundred forty-one thousand, three hundred eighty-one".

Divisors: 1 37 89 3293 7817 289229 695713 25741381