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1315411225 = 5279666031
BaseRepresentation
bin100111001100111…
…1001010100011001
310101200011210222021
41032121321110121
510143221124400
6334305454441
744411545102
oct11631712431
93350153867
101315411225
11615573a17
12308641421
1317c6a284b
14c69b33a9
157a73671a
hex4e679519

1315411225 has 12 divisors (see below), whose sum is σ = 1651759360. Its totient is φ = 1039006800.

The previous prime is 1315411199. The next prime is 1315411247. The reversal of 1315411225 is 5221145131.

It is not a de Polignac number, because 1315411225 - 29 = 1315410713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1315411225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331041 + ... + 334990.

Almost surely, 21315411225 is an apocalyptic number.

It is an amenable number.

1315411225 is a deficient number, since it is larger than the sum of its proper divisors (336348135).

1315411225 is an equidigital number, since it uses as much as digits as its factorization.

1315411225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666120 (or 666115 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 1315411225 is about 36268.5983324418. The cubic root of 1315411225 is about 1095.6886961184.

Adding to 1315411225 its reverse (5221145131), we get a palindrome (6536556356).

The spelling of 1315411225 in words is "one billion, three hundred fifteen million, four hundred eleven thousand, two hundred twenty-five".

Divisors: 1 5 25 79 395 1975 666031 3330155 16650775 52616449 263082245 1315411225