1297525633 has 4 divisors (see below), whose sum is σ = 1301004628. Its totient is φ = 1294046640.

The previous prime is 1297525631. The next prime is 1297525651. The reversal of 1297525633 is 3365257921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3365257921 = 103 ⋅32672407.

It can be written as a sum of positive squares in 2 ways, for example, as 619860609 + 677665024 = 24897^2 + 26032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297525633 - 2¹ = 1297525631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297525633.

It is not an unprimeable number, because it can be changed into a prime (1297525631) 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, 1738938 + ... + 1739683.

It is an arithmetic number, because the mean of its divisors is an integer number (325251157).

Almost surely, 2^1297525633 is an apocalyptic number.

It is an amenable number.

1297525633 is a deficient number, since it is larger than the sum of its proper divisors (3478995).

1297525633 is an equidigital number, since it uses as much as digits as its factorization.

1297525633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478994.

The product of its digits is 340200, while the sum is 43.

The square root of 1297525633 is about 36021.1831149395. The cubic root of 1297525633 is about 1090.7000057040.

The spelling of 1297525633 in words is "one billion, two hundred ninety-seven million, five hundred twenty-five thousand, six hundred thirty-three".