1253202857 has 2 divisors, whose sum is σ = 1253202858. Its totient is φ = 1253202856.

The previous prime is 1253202829. The next prime is 1253202917. The reversal of 1253202857 is 7582023521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1252876816 + 326041 = 35396^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253202857 - 2¹² = 1253198761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253201857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626601428 + 626601429.

It is an arithmetic number, because the mean of its divisors is an integer number (626601429).

Almost surely, 2^1253202857 is an apocalyptic number.

It is an amenable number.

1253202857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253202857 is an equidigital number, since it uses as much as digits as its factorization.

1253202857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 1253202857 is about 35400.6053196834. The cubic root of 1253202857 is about 1078.1366064893.

The spelling of 1253202857 in words is "one billion, two hundred fifty-three million, two hundred two thousand, eight hundred fifty-seven".