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212052925 = 5271211731
BaseRepresentation
bin11001010001110…
…10101110111101
3112210000101221001
430220322232331
5413241143200
633013010301
75153264050
oct1450725675
9483011831
10212052925
11a9775557
125b023991
1334c17406
142023ca97
151393a76a
hexca3abbd

212052925 has 12 divisors (see below), whose sum is σ = 300509536. Its totient is φ = 145407600.

The previous prime is 212052859. The next prime is 212052937. The reversal of 212052925 is 529250212.

It is not a de Polignac number, because 212052925 - 29 = 212052413 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212052893 and 212052902.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 605691 + ... + 606040.

Almost surely, 2212052925 is an apocalyptic number.

212052925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212052925 is a deficient number, since it is larger than the sum of its proper divisors (88456611).

212052925 is a wasteful number, since it uses less digits than its factorization.

212052925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211748 (or 1211743 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 212052925 is about 14562.0371171069. The cubic root of 212052925 is about 596.3228107636.

The spelling of 212052925 in words is "two hundred twelve million, fifty-two thousand, nine hundred twenty-five".

Divisors: 1 5 7 25 35 175 1211731 6058655 8482117 30293275 42410585 212052925