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25190017 = 199126583
BaseRepresentation
bin110000000010…
…1111010000001
31202101210012121
41200011322001
522422040032
62255524241
7424053166
oct140057201
952353177
1025190017
11132456a6
128529681
1352ac848
1434ba06d
152328a97
hex1805e81

25190017 has 4 divisors (see below), whose sum is σ = 25316800. Its totient is φ = 25063236.

The previous prime is 25190003. The next prime is 25190023. The reversal of 25190017 is 71009152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25190017 - 211 = 25187969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25189973 and 25190000.

It is not an unprimeable number, because it can be changed into a prime (25190117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63093 + ... + 63490.

It is an arithmetic number, because the mean of its divisors is an integer number (6329200).

Almost surely, 225190017 is an apocalyptic number.

It is an amenable number.

25190017 is a deficient number, since it is larger than the sum of its proper divisors (126783).

25190017 is a wasteful number, since it uses less digits than its factorization.

25190017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126782.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 25190017 is about 5018.9657301081. The cubic root of 25190017 is about 293.1407222394.

Adding to 25190017 its reverse (71009152), we get a palindrome (96199169).

The spelling of 25190017 in words is "twenty-five million, one hundred ninety thousand, seventeen".

Divisors: 1 199 126583 25190017