1252252551 has 16 divisors (see below), whose sum is σ = 1917325440. Its totient is φ = 718996320.

The previous prime is 1252252541. The next prime is 1252252577. The reversal of 1252252551 is 1552522521.

It is not a de Polignac number, because 1252252551 - 2¹⁰ = 1252251527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252252511) 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 15 ways as a sum of consecutive naturals, for example, 997980 + ... + 999233.

It is an arithmetic number, because the mean of its divisors is an integer number (119832840).

Almost surely, 2^1252252551 is an apocalyptic number.

1252252551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1252252551 is a deficient number, since it is larger than the sum of its proper divisors (665072889).

1252252551 is a wasteful number, since it uses less digits than its factorization.

1252252551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997246.

The product of its digits is 10000, while the sum is 30.

The square root of 1252252551 is about 35387.1806025855. The cubic root of 1252252551 is about 1077.8640199286.

The spelling of 1252252551 in words is "one billion, two hundred fifty-two million, two hundred fifty-two thousand, five hundred fifty-one".