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25065091 = 97258403
BaseRepresentation
bin101111110011…
…1011010000011
31202011102211201
41133213122003
522404040331
62253122031
7423023032
oct137473203
952142751
1025065091
111316a857
128489317
135267a1c
143486719
152301a61
hex17e7683

25065091 has 4 divisors (see below), whose sum is σ = 25323592. Its totient is φ = 24806592.

The previous prime is 25065017. The next prime is 25065097. The reversal of 25065091 is 19056052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25065091 - 221 = 22967939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25065097) 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, 129105 + ... + 129298.

It is an arithmetic number, because the mean of its divisors is an integer number (6330898).

Almost surely, 225065091 is an apocalyptic number.

25065091 is a deficient number, since it is larger than the sum of its proper divisors (258501).

25065091 is an equidigital number, since it uses as much as digits as its factorization.

25065091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258500.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 25065091 is about 5006.5048686684. The cubic root of 25065091 is about 292.6553235492.

It can be divided in two parts, 250 and 65091, that added together give a triangular number (65341 = T361).

The spelling of 25065091 in words is "twenty-five million, sixty-five thousand, ninety-one".

Divisors: 1 97 258403 25065091