1252603801 has 2 divisors, whose sum is σ = 1252603802. Its totient is φ = 1252603800.

The previous prime is 1252603799. The next prime is 1252603819. The reversal of 1252603801 is 1083062521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1172035225 + 80568576 = 34235^2 + 8976^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252603801 - 2¹ = 1252603799 is a prime.

Together with 1252603799, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1252603801.

It is not a weakly prime, because it can be changed into another prime (1252603831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626301900 + 626301901.

It is an arithmetic number, because the mean of its divisors is an integer number (626301901).

Almost surely, 2^1252603801 is an apocalyptic number.

It is an amenable number.

1252603801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252603801 is an equidigital number, since it uses as much as digits as its factorization.

1252603801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1252603801 is about 35392.1432100403. The cubic root of 1252603801 is about 1077.9647888307.

The spelling of 1252603801 in words is "one billion, two hundred fifty-two million, six hundred three thousand, eight hundred one".