1252508087 has 4 divisors (see below), whose sum is σ = 1252598976. Its totient is φ = 1252417200.

The previous prime is 1252508083. The next prime is 1252508093. The reversal of 1252508087 is 7808052521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7808052521 = 61 ⋅128000861.

It is a cyclic number.

It is not a de Polignac number, because 1252508087 - 2² = 1252508083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1252508087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252508083) 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 3 ways as a sum of consecutive naturals, for example, 20039 + ... + 53912.

It is an arithmetic number, because the mean of its divisors is an integer number (313149744).

Almost surely, 2^1252508087 is an apocalyptic number.

1252508087 is a deficient number, since it is larger than the sum of its proper divisors (90889).

1252508087 is an equidigital number, since it uses as much as digits as its factorization.

1252508087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90888.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 1252508087 is about 35390.7909914430. The cubic root of 1252508087 is about 1077.9373316385.

The spelling of 1252508087 in words is "one billion, two hundred fifty-two million, five hundred eight thousand, eighty-seven".