1295571090049 has 4 divisors (see below), whose sum is σ = 1298901607380. Its totient is φ = 1292240572720.

The previous prime is 1295571090007. The next prime is 1295571090089. The reversal of 1295571090049 is 9400901755921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100747203649 + 1194823886400 = 317407^2 + 1093080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1295571090049 - 2¹¹ = 1295571088001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1295571089978 and 1295571090005.

It is not an unprimeable number, because it can be changed into a prime (1295571090089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1665258082 + ... + 1665258859.

It is an arithmetic number, because the mean of its divisors is an integer number (324725401845).

Almost surely, 2^{1295571090049} is an apocalyptic number.

It is an amenable number.

1295571090049 is a deficient number, since it is larger than the sum of its proper divisors (3330517331).

1295571090049 is an equidigital number, since it uses as much as digits as its factorization.

1295571090049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330517330.

The product of its (nonzero) digits is 1020600, while the sum is 52.

The spelling of 1295571090049 in words is "one trillion, two hundred ninety-five billion, five hundred seventy-one million, ninety thousand, forty-nine".