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725868148 = 221571155841
BaseRepresentation
bin101011010000111…
…101111001110100
31212120211220220111
4223100331321310
52441310240043
6200005512404
723662530445
oct5320757164
91776756814
10725868148
11342808535
12183112704
13b74c87a5
146c58d2cc
1543ad209d
hex2b43de74

725868148 has 12 divisors (see below), whose sum is σ = 1278361252. Its totient is φ = 360622080.

The previous prime is 725868107. The next prime is 725868161. The reversal of 725868148 is 841868527.

It can be written as a sum of positive squares in 2 ways, for example, as 108743184 + 617124964 = 10428^2 + 24842^2 .

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 3 ways as a sum of consecutive naturals, for example, 577293 + ... + 578548.

Almost surely, 2725868148 is an apocalyptic number.

It is an amenable number.

725868148 is a deficient number, since it is larger than the sum of its proper divisors (552493104).

725868148 is a wasteful number, since it uses less digits than its factorization.

725868148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156002 (or 1156000 counting only the distinct ones).

The product of its digits is 860160, while the sum is 49.

The square root of 725868148 is about 26941.9403161688. The cubic root of 725868148 is about 898.7093219570.

The spelling of 725868148 in words is "seven hundred twenty-five million, eight hundred sixty-eight thousand, one hundred forty-eight".

Divisors: 1 2 4 157 314 628 1155841 2311682 4623364 181467037 362934074 725868148