1252880513 has 4 divisors (see below), whose sum is σ = 1268739840. Its totient is φ = 1237021188.

The previous prime is 1252880509. The next prime is 1252880549. The reversal of 1252880513 is 3150882521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1252880513 - 2² = 1252880509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252880813) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7929545 + ... + 7929702.

It is an arithmetic number, because the mean of its divisors is an integer number (317184960).

Almost surely, 2^1252880513 is an apocalyptic number.

It is an amenable number.

1252880513 is a deficient number, since it is larger than the sum of its proper divisors (15859327).

1252880513 is an equidigital number, since it uses as much as digits as its factorization.

1252880513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15859326.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1252880513 is about 35396.0522233765. The cubic root of 1252880513 is about 1078.0441605177.

The spelling of 1252880513 in words is "one billion, two hundred fifty-two million, eight hundred eighty thousand, five hundred thirteen".