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1255660313 is a prime number
BaseRepresentation
bin100101011010111…
…1101101100011001
310020111202011010112
41022311331230121
510032422112223
6324333054105
743054636145
oct11265755431
93214664115
101255660313
115948731a6
122b0627335
131701b208b
14bca9c225
1575382778
hex4ad7db19

1255660313 has 2 divisors, whose sum is σ = 1255660314. Its totient is φ = 1255660312.

The previous prime is 1255660291. The next prime is 1255660387. The reversal of 1255660313 is 3130665521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214661904 + 40998409 = 34852^2 + 6403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255660313 - 212 = 1255656217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255660313.

It is not a weakly prime, because it can be changed into another prime (1255660213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627830156 + 627830157.

It is an arithmetic number, because the mean of its divisors is an integer number (627830157).

Almost surely, 21255660313 is an apocalyptic number.

It is an amenable number.

1255660313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255660313 is an equidigital number, since it uses as much as digits as its factorization.

1255660313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1255660313 is about 35435.2975576613. The cubic root of 1255660313 is about 1078.8408668630.

The spelling of 1255660313 in words is "one billion, two hundred fifty-five million, six hundred sixty thousand, three hundred thirteen".