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90300025 = 5219118911
BaseRepresentation
bin1010110000111…
…01111001111001
320021220201100101
411120131321321
5141104100100
612543235401
72144352244
oct530357171
9207821311
1090300025
1146a76822
12262a8b61
131592868a
14bdc825b
157dda86a
hex561de79

90300025 has 12 divisors (see below), whose sum is σ = 112564224. Its totient is φ = 71858000.

The previous prime is 90299981. The next prime is 90300029. The reversal of 90300025 is 52000309.

It is not a de Polignac number, because 90300025 - 27 = 90299897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90299975 and 90300011.

It is not an unprimeable number, because it can be changed into a prime (90300029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4681 + ... + 14230.

It is an arithmetic number, because the mean of its divisors is an integer number (9380352).

Almost surely, 290300025 is an apocalyptic number.

It is an amenable number.

90300025 is a deficient number, since it is larger than the sum of its proper divisors (22264199).

90300025 is a wasteful number, since it uses less digits than its factorization.

90300025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19112 (or 19107 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 90300025 is about 9502.6325299887. The cubic root of 90300025 is about 448.6378976814.

The spelling of 90300025 in words is "ninety million, three hundred thousand, twenty-five".

Divisors: 1 5 25 191 955 4775 18911 94555 472775 3612001 18060005 90300025