Base | Representation |
---|---|
bin | 101011010001000… |
… | …000110011011111 |
3 | 1212120212112012121 |
4 | 223101000303133 |
5 | 2441311130111 |
6 | 200010043411 |
7 | 23662610212 |
oct | 5321006337 |
9 | 1776775177 |
10 | 725880031 |
11 | 342816458 |
12 | 183119567 |
13 | b7501016 |
14 | 6c593779 |
15 | 43ad5871 |
hex | 2b440cdf |
725880031 has 8 divisors (see below), whose sum is σ = 750950928. Its totient is φ = 701160000.
The previous prime is 725880019. The next prime is 725880041. The reversal of 725880031 is 130088527.
725880031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 725880031 - 29 = 725879519 is a prime.
It is a super-2 number, since 2×7258800312 = 1053803638809121922, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (725880041) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83505 + ... + 91786.
It is an arithmetic number, because the mean of its divisors is an integer number (93868866).
Almost surely, 2725880031 is an apocalyptic number.
725880031 is a deficient number, since it is larger than the sum of its proper divisors (25070897).
725880031 is a wasteful number, since it uses less digits than its factorization.
725880031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 175433.
The product of its (nonzero) digits is 13440, while the sum is 34.
The square root of 725880031 is about 26942.1608450399. The cubic root of 725880031 is about 898.7142261097.
The spelling of 725880031 in words is "seven hundred twenty-five million, eight hundred eighty thousand, thirty-one".
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