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245151325220 = 22512257566261
BaseRepresentation
bin1110010001010000101…
…0000101110000100100
3212102210000110122201212
43210110022011300210
513004032214401340
6304342043410552
723466035611454
oct3442412056044
9772700418655
10245151325220
1194a7159410a
123b618823a58
131a16b6a4469
14bc188a1d64
15659c304a65
hex3914285c24

245151325220 has 12 divisors (see below), whose sum is σ = 514817783004. Its totient is φ = 98060530080.

The previous prime is 245151325219. The next prime is 245151325249. The reversal of 245151325220 is 22523151542.

It can be written as a sum of positive squares in 2 ways, for example, as 25280364004 + 219870961216 = 158998^2 + 468904^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6128783111 + ... + 6128783150.

It is an arithmetic number, because the mean of its divisors is an integer number (42901481917).

Almost surely, 2245151325220 is an apocalyptic number.

245151325220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245151325220 is an abundant number, since it is smaller than the sum of its proper divisors (269666457784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245151325220 is a wasteful number, since it uses less digits than its factorization.

245151325220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12257566270 (or 12257566268 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 245151325220 its reverse (22523151542), we get a palindrome (267674476762).

The spelling of 245151325220 in words is "two hundred forty-five billion, one hundred fifty-one million, three hundred twenty-five thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 12257566261 24515132522 49030265044 61287831305 122575662610 245151325220