1252105215 has 32 divisors (see below), whose sum is σ = 2060868096. Its totient is φ = 648888960.

The previous prime is 1252105193. The next prime is 1252105219. The reversal of 1252105215 is 5125012521.

It is not a de Polignac number, because 1252105215 - 2⁹ = 1252104703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252105219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67702 + ... + 84188.

It is an arithmetic number, because the mean of its divisors is an integer number (64402128).

Almost surely, 2^1252105215 is an apocalyptic number.

1252105215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1252105215 is a deficient number, since it is larger than the sum of its proper divisors (808762881).

1252105215 is a wasteful number, since it uses less digits than its factorization.

1252105215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16639.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1252105215 is about 35385.0987705277. The cubic root of 1252105215 is about 1077.8217456014.

Adding to 1252105215 its reverse (5125012521), we get a palindrome (6377117736).

The spelling of 1252105215 in words is "one billion, two hundred fifty-two million, one hundred five thousand, two hundred fifteen".