1252243251 has 48 divisors (see below), whose sum is σ = 2093058240. Its totient is φ = 706682880.

The previous prime is 1252243247. The next prime is 1252243297. The reversal of 1252243251 is 1523422521.

It is not a de Polignac number, because 1252243251 - 2² = 1252243247 is a prime.

It is a super-2 number, since 2×1252243251² = 3136226319350098002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252243351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2200495 + ... + 2201063.

It is an arithmetic number, because the mean of its divisors is an integer number (43605380).

Almost surely, 2^1252243251 is an apocalyptic number.

1252243251 is a deficient number, since it is larger than the sum of its proper divisors (840814989).

1252243251 is a wasteful number, since it uses less digits than its factorization.

1252243251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 953 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1252243251 is about 35387.0491988241. The cubic root of 1252243251 is about 1077.8613516276.

Adding to 1252243251 its reverse (1523422521), we get a palindrome (2775665772).

The spelling of 1252243251 in words is "one billion, two hundred fifty-two million, two hundred forty-three thousand, two hundred fifty-one".