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25380385 = 523220699
BaseRepresentation
bin110000011010…
…0011000100001
31202202110100021
41200310120201
522444133020
62303553441
7425505202
oct140643041
952673307
1025380385
1113365728
1285bb881
1353483a4
1435295a9
1523651aa
hex1834621

25380385 has 8 divisors (see below), whose sum is σ = 31780800. Its totient is φ = 19421424.

The previous prime is 25380361. The next prime is 25380389. The reversal of 25380385 is 58308352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-25380385 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25380385.

It is not an unprimeable number, because it can be changed into a prime (25380389) 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, 110235 + ... + 110464.

It is an arithmetic number, because the mean of its divisors is an integer number (3972600).

Almost surely, 225380385 is an apocalyptic number.

It is an amenable number.

25380385 is a deficient number, since it is larger than the sum of its proper divisors (6400415).

25380385 is a wasteful number, since it uses less digits than its factorization.

25380385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220727.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 25380385 is about 5037.8948976730. The cubic root of 25380385 is about 293.8773185829.

The spelling of 25380385 in words is "twenty-five million, three hundred eighty thousand, three hundred eighty-five".

Divisors: 1 5 23 115 220699 1103495 5076077 25380385