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25142195 = 513613631
BaseRepresentation
bin101111111101…
…0001110110011
31202022100121102
41133322032303
522414022240
62254515015
7423463601
oct137721663
952270542
1025142195
1113212781
128505a6b
135293b50
1434a6871
152319815
hex17fa3b3

25142195 has 16 divisors (see below), whose sum is σ = 32596032. Its totient is φ = 18506880.

The previous prime is 25142189. The next prime is 25142207. The reversal of 25142195 is 59124152.

It is not a de Polignac number, because 25142195 - 214 = 25125811 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39530 + ... + 40160.

It is an arithmetic number, because the mean of its divisors is an integer number (2037252).

Almost surely, 225142195 is an apocalyptic number.

25142195 is a deficient number, since it is larger than the sum of its proper divisors (7453837).

25142195 is a wasteful number, since it uses less digits than its factorization.

25142195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262.

The product of its digits is 3600, while the sum is 29.

The square root of 25142195 is about 5014.1993378804. The cubic root of 25142195 is about 292.9551003430.

The spelling of 25142195 in words is "twenty-five million, one hundred forty-two thousand, one hundred ninety-five".

Divisors: 1 5 13 65 613 631 3065 3155 7969 8203 39845 41015 386803 1934015 5028439 25142195