1253054543249 has 2 divisors, whose sum is σ = 1253054543250. Its totient is φ = 1253054543248.

The previous prime is 1253054543219. The next prime is 1253054543287. The reversal of 1253054543249 is 9423454503521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1031378362624 + 221676180625 = 1015568^2 + 470825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253054543249 is a prime.

It is a super-2 number, since 2×1253054543249² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1253054543219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626527271624 + 626527271625.

It is an arithmetic number, because the mean of its divisors is an integer number (626527271625).

Almost surely, 2^{1253054543249} is an apocalyptic number.

It is an amenable number.

1253054543249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253054543249 is an equidigital number, since it uses as much as digits as its factorization.

1253054543249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 1253054543249 in words is "one trillion, two hundred fifty-three billion, fifty-four million, five hundred forty-three thousand, two hundred forty-nine".