1252077647 has 4 divisors (see below), whose sum is σ = 1252276176. Its totient is φ = 1251879120.

The previous prime is 1252077623. The next prime is 1252077653. The reversal of 1252077647 is 7467702521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1252077647 - 2⁶ = 1252077583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252077347) 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, 89483 + ... + 102524.

It is an arithmetic number, because the mean of its divisors is an integer number (313069044).

Almost surely, 2^1252077647 is an apocalyptic number.

1252077647 is a deficient number, since it is larger than the sum of its proper divisors (198529).

1252077647 is an equidigital number, since it uses as much as digits as its factorization.

1252077647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198528.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 1252077647 is about 35384.7092258789. The cubic root of 1252077647 is about 1077.8138352950.

The spelling of 1252077647 in words is "one billion, two hundred fifty-two million, seventy-seven thousand, six hundred forty-seven".