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72079225 = 5227110639
BaseRepresentation
bin1000100101111…
…01011101111001
312000122000002221
410102331131321
5121423013400
611052524041
71533443341
oct422753571
9160560087
1072079225
1137761209
1220180621
1311c1903a
149803d21
1564dbc1a
hex44bd779

72079225 has 12 divisors (see below), whose sum is σ = 89716480. Its totient is φ = 57445200.

The previous prime is 72079207. The next prime is 72079229. The reversal of 72079225 is 52297027.

It is not a de Polignac number, because 72079225 - 211 = 72077177 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (72079229) 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, 1456 + ... + 12094.

Almost surely, 272079225 is an apocalyptic number.

It is an amenable number.

72079225 is a deficient number, since it is larger than the sum of its proper divisors (17637255).

72079225 is a wasteful number, since it uses less digits than its factorization.

72079225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920 (or 10915 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 72079225 is about 8489.9484686304. The cubic root of 72079225 is about 416.1692963086.

The spelling of 72079225 in words is "seventy-two million, seventy-nine thousand, two hundred twenty-five".

Divisors: 1 5 25 271 1355 6775 10639 53195 265975 2883169 14415845 72079225