1252625129 has 8 divisors (see below), whose sum is σ = 1445746368. Its totient is φ = 1063047600.

The previous prime is 1252625123. The next prime is 1252625137. The reversal of 1252625129 is 9215262521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252625129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252625123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885167 + ... + 886580.

It is an arithmetic number, because the mean of its divisors is an integer number (180718296).

Almost surely, 2^1252625129 is an apocalyptic number.

It is an amenable number.

1252625129 is a deficient number, since it is larger than the sum of its proper divisors (193121239).

1252625129 is a wasteful number, since it uses less digits than its factorization.

1252625129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771855.

The product of its digits is 21600, while the sum is 35.

The square root of 1252625129 is about 35392.4445185692. Note that the first 3 decimals coincide. The cubic root of 1252625129 is about 1077.9709069404.

It can be divided in two parts, 125262512 and 9, that added together give a palindrome (125262521).

The spelling of 1252625129 in words is "one billion, two hundred fifty-two million, six hundred twenty-five thousand, one hundred twenty-nine".