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1205260025 = 5248210401
BaseRepresentation
bin100011111010110…
…1100111011111001
310002222220112221012
41013311230323321
54432021310100
6315332523305
741603353424
oct10765547371
93088815835
101205260025
11569379772
12297780535
13162916718
14b60dc9bb
1570c29135
hex47d6cef9

1205260025 has 6 divisors (see below), whose sum is σ = 1494522462. Its totient is φ = 964208000.

The previous prime is 1205259997. The next prime is 1205260027. The reversal of 1205260025 is 5200625021.

It can be written as a sum of positive squares in 3 ways, for example, as 7823209 + 1197436816 = 2797^2 + 34604^2 .

It is not a de Polignac number, because 1205260025 - 216 = 1205194489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205260027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24105176 + ... + 24105225.

It is an arithmetic number, because the mean of its divisors is an integer number (249087077).

Almost surely, 21205260025 is an apocalyptic number.

It is an amenable number.

1205260025 is a deficient number, since it is larger than the sum of its proper divisors (289262437).

1205260025 is an equidigital number, since it uses as much as digits as its factorization.

1205260025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48210411 (or 48210406 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1205260025 is about 34716.8550562979. The cubic root of 1205260025 is about 1064.2089756798.

Adding to 1205260025 its reverse (5200625021), we get a palindrome (6405885046).

The spelling of 1205260025 in words is "one billion, two hundred five million, two hundred sixty thousand, twenty-five".

Divisors: 1 5 25 48210401 241052005 1205260025