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25130249 = 103269907
BaseRepresentation
bin101111111011…
…1010100001001
31202021202012222
41133313110021
522413131444
62254343425
7423414014
oct137672411
952252188
1025130249
1113204801
1284bab75
13528b591
1434a237b
152315eee
hex17f7509

25130249 has 8 divisors (see below), whose sum is σ = 25496640. Its totient is φ = 24766416.

The previous prime is 25130239. The next prime is 25130257. The reversal of 25130249 is 94203152.

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 25130249 - 216 = 25064713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25130219) 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, 27254 + ... + 28160.

It is an arithmetic number, because the mean of its divisors is an integer number (3187080).

Almost surely, 225130249 is an apocalyptic number.

It is an amenable number.

25130249 is a deficient number, since it is larger than the sum of its proper divisors (366391).

25130249 is a wasteful number, since it uses less digits than its factorization.

25130249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 25130249 is about 5013.0079792476. The cubic root of 25130249 is about 292.9086950067.

The spelling of 25130249 in words is "twenty-five million, one hundred thirty thousand, two hundred forty-nine".

Divisors: 1 103 269 907 27707 93421 243983 25130249