1252510397 has 2 divisors, whose sum is σ = 1252510398. Its totient is φ = 1252510396.

The previous prime is 1252510367. The next prime is 1252510403. The reversal of 1252510397 is 7930152521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1242844516 + 9665881 = 35254^2 + 3109^2 .

It is an emirp because it is prime and its reverse (7930152521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1252510397 - 2¹² = 1252506301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252510367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626255198 + 626255199.

It is an arithmetic number, because the mean of its divisors is an integer number (626255199).

Almost surely, 2^1252510397 is an apocalyptic number.

It is an amenable number.

1252510397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252510397 is an equidigital number, since it uses as much as digits as its factorization.

1252510397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 1252510397 is about 35390.8236270364. The cubic root of 1252510397 is about 1077.9379943178.

It can be divided in two parts, 12525 and 10397, that added together give a palindrome (22922).

The spelling of 1252510397 in words is "one billion, two hundred fifty-two million, five hundred ten thousand, three hundred ninety-seven".