1252750729 has 8 divisors (see below), whose sum is σ = 1352295360. Its totient is φ = 1156962576.

The previous prime is 1252750687. The next prime is 1252750801. The reversal of 1252750729 is 9270572521.

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

It is a cyclic number.

It is not a de Polignac number, because 1252750729 - 2⁷ = 1252750601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1252750691 and 1252750700.

It is not an unprimeable number, because it can be changed into a prime (1262750729) 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, 938427 + ... + 939760.

It is an arithmetic number, because the mean of its divisors is an integer number (169036920).

Almost surely, 2^1252750729 is an apocalyptic number.

It is an amenable number.

1252750729 is a deficient number, since it is larger than the sum of its proper divisors (99544631).

1252750729 is a wasteful number, since it uses less digits than its factorization.

1252750729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878239.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 1252750729 is about 35394.2188641027. The cubic root of 1252750729 is about 1078.0069349102.

The spelling of 1252750729 in words is "one billion, two hundred fifty-two million, seven hundred fifty thousand, seven hundred twenty-nine".