1295722361 has 2 divisors, whose sum is σ = 1295722362. Its totient is φ = 1295722360.

The previous prime is 1295722343. The next prime is 1295722391. The reversal of 1295722361 is 1632275921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 927811600 + 367910761 = 30460^2 + 19181^2 .

It is a cyclic number.

It is not a de Polignac number, because 1295722361 - 2¹⁰ = 1295721337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1295722301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647861180 + 647861181.

It is an arithmetic number, because the mean of its divisors is an integer number (647861181).

Almost surely, 2^1295722361 is an apocalyptic number.

It is an amenable number.

1295722361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295722361 is an equidigital number, since it uses as much as digits as its factorization.

1295722361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 1295722361 is about 35996.1436962350. The cubic root of 1295722361 is about 1090.1944946538.

The spelling of 1295722361 in words is "one billion, two hundred ninety-five million, seven hundred twenty-two thousand, three hundred sixty-one".