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25056261 = 322996001
BaseRepresentation
bin101111110010…
…1010000000101
31202010222201200
41133211100011
522403300021
62253013113
7422655216
oct137452005
952128650
1025056261
111316415a
128484199
1352639b9
14348340d
1522ee126
hex17e5405

25056261 has 12 divisors (see below), whose sum is σ = 37440780. Its totient is φ = 16128000.

The previous prime is 25056253. The next prime is 25056271. The reversal of 25056261 is 16265052.

It can be written as a sum of positive squares in 2 ways, for example, as 7667361 + 17388900 = 2769^2 + 4170^2 .

It is not a de Polignac number, because 25056261 - 23 = 25056253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25056271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47740 + ... + 48261.

It is an arithmetic number, because the mean of its divisors is an integer number (3120065).

Almost surely, 225056261 is an apocalyptic number.

It is an amenable number.

25056261 is a deficient number, since it is larger than the sum of its proper divisors (12384519).

25056261 is a wasteful number, since it uses less digits than its factorization.

25056261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96036 (or 96033 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 25056261 is about 5005.6229382565. The cubic root of 25056261 is about 292.6209537023.

The spelling of 25056261 in words is "twenty-five million, fifty-six thousand, two hundred sixty-one".

Divisors: 1 3 9 29 87 261 96001 288003 864009 2784029 8352087 25056261