1275265049 has 2 divisors, whose sum is σ = 1275265050. Its totient is φ = 1275265048.

The previous prime is 1275264997. The next prime is 1275265067. The reversal of 1275265049 is 9405625721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1054950400 + 220314649 = 32480^2 + 14843^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275265049 - 2¹² = 1275260953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1275264997 and 1275265015.

It is not a weakly prime, because it can be changed into another prime (1275265099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637632524 + 637632525.

It is an arithmetic number, because the mean of its divisors is an integer number (637632525).

Almost surely, 2^1275265049 is an apocalyptic number.

It is an amenable number.

1275265049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275265049 is an equidigital number, since it uses as much as digits as its factorization.

1275265049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 1275265049 is about 35710.8533782098. The cubic root of 1275265049 is about 1084.4265763120.

The spelling of 1275265049 in words is "one billion, two hundred seventy-five million, two hundred sixty-five thousand, forty-nine".