1252005667 has 32 divisors (see below), whose sum is σ = 1483130880. Its totient is φ = 1045249920.

The previous prime is 1252005581. The next prime is 1252005691. The reversal of 1252005667 is 7665002521.

It is not a de Polignac number, because 1252005667 - 2⁷ = 1252005539 is a prime.

It is a super-2 number, since 2×1252005667² = 3135036380400229778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252005367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738673 + ... + 740365.

It is an arithmetic number, because the mean of its divisors is an integer number (46347840).

Almost surely, 2^1252005667 is an apocalyptic number.

1252005667 is a deficient number, since it is larger than the sum of its proper divisors (231125213).

1252005667 is a wasteful number, since it uses less digits than its factorization.

1252005667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1252005667 is about 35383.6921052623. The cubic root of 1252005667 is about 1077.7931809512.

The spelling of 1252005667 in words is "one billion, two hundred fifty-two million, five thousand, six hundred sixty-seven".