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25080389 = 172950873
BaseRepresentation
bin101111110101…
…1001001000101
31202012012211022
41133223021011
522410033024
62253320525
7423115445
oct137531105
952165738
1025080389
11131802a4
128496145
135271989
14348c125
15230635e
hex17eb245

25080389 has 8 divisors (see below), whose sum is σ = 27471960. Its totient is φ = 22790656.

The previous prime is 25080383. The next prime is 25080403. The reversal of 25080389 is 98308052.

It can be written as a sum of positive squares in 4 ways, for example, as 7924225 + 17156164 = 2815^2 + 4142^2 .

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-25080389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25080383) 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, 24944 + ... + 25929.

It is an arithmetic number, because the mean of its divisors is an integer number (3433995).

Almost surely, 225080389 is an apocalyptic number.

25080389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

25080389 is a deficient number, since it is larger than the sum of its proper divisors (2391571).

25080389 is a wasteful number, since it uses less digits than its factorization.

25080389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50919.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 25080389 is about 5008.0324479779. The cubic root of 25080389 is about 292.7148503046.

The spelling of 25080389 in words is "twenty-five million, eighty thousand, three hundred eighty-nine".

Divisors: 1 17 29 493 50873 864841 1475317 25080389