1251253002 has 16 divisors (see below), whose sum is σ = 2544922080. Its totient is φ = 410014992.

The previous prime is 1251252983. The next prime is 1251253021. The reversal of 1251253002 is 2003521521.

It is an interprime number because it is at equal distance from previous prime (1251252983) and next prime (1251253021).

It is a self number, because there is not a number n which added to its sum of digits gives 1251253002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1766953 + ... + 1767660.

It is an arithmetic number, because the mean of its divisors is an integer number (159057630).

Almost surely, 2^1251253002 is an apocalyptic number.

1251253002 is an abundant number, since it is smaller than the sum of its proper divisors (1293669078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251253002 is a wasteful number, since it uses less digits than its factorization.

1251253002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534677.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1251253002 is about 35373.0547451022. The cubic root of 1251253002 is about 1077.5771596132.

Adding to 1251253002 its reverse (2003521521), we get a palindrome (3254774523).

The spelling of 1251253002 in words is "one billion, two hundred fifty-one million, two hundred fifty-three thousand, two".