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525905080 = 23531424117
BaseRepresentation
bin11111010110001…
…010110010111000
31100122120202010221
4133112022302320
52034112430310
6124103545424
716014055651
oct3726126270
91318522127
10525905080
1124a9502a8
1212815b274
1384c5524c
144dbba528
1531283ada
hex1f58acb8

525905080 has 32 divisors (see below), whose sum is σ = 1221459840. Its totient is φ = 203575680.

The previous prime is 525905071. The next prime is 525905099. The reversal of 525905080 is 80509525.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210819 + ... + 213298.

It is an arithmetic number, because the mean of its divisors is an integer number (38170620).

Almost surely, 2525905080 is an apocalyptic number.

It is an amenable number.

525905080 is an abundant number, since it is smaller than the sum of its proper divisors (695554760).

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

525905080 is a wasteful number, since it uses less digits than its factorization.

525905080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424159 (or 424155 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 525905080 is about 22932.6204346560. The cubic root of 525905080 is about 807.1776384551.

The spelling of 525905080 in words is "five hundred twenty-five million, nine hundred five thousand, eighty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 1240 424117 848234 1696468 2120585 3392936 4241170 8482340 13147627 16964680 26295254 52590508 65738135 105181016 131476270 262952540 525905080