1252241401 has 2 divisors, whose sum is σ = 1252241402. Its totient is φ = 1252241400.

The previous prime is 1252241383. The next prime is 1252241449. The reversal of 1252241401 is 1041422521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1249551801 + 2689600 = 35349^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252241401 - 2⁹ = 1252240889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252247401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626120700 + 626120701.

It is an arithmetic number, because the mean of its divisors is an integer number (626120701).

Almost surely, 2^1252241401 is an apocalyptic number.

It is an amenable number.

1252241401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252241401 is an equidigital number, since it uses as much as digits as its factorization.

1252241401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1252241401 is about 35387.0230593081. The cubic root of 1252241401 is about 1077.8608208349.

Adding to 1252241401 its reverse (1041422521), we get a palindrome (2293663922).

The spelling of 1252241401 in words is "one billion, two hundred fifty-two million, two hundred forty-one thousand, four hundred one".