1252777497 has 16 divisors (see below), whose sum is σ = 1704468480. Its totient is φ = 818298000.

The previous prime is 1252777453. The next prime is 1252777511. The reversal of 1252777497 is 7947772521.

It is not a de Polignac number, because 1252777497 - 2¹¹ = 1252775449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1252772497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10872 + ... + 51222.

It is an arithmetic number, because the mean of its divisors is an integer number (106529280).

Almost surely, 2^1252777497 is an apocalyptic number.

It is an amenable number.

1252777497 is a deficient number, since it is larger than the sum of its proper divisors (451690983).

1252777497 is a wasteful number, since it uses less digits than its factorization.

1252777497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40564.

The product of its digits is 1728720, while the sum is 51.

The square root of 1252777497 is about 35394.5970029325. The cubic root of 1252777497 is about 1078.0146129165.

The spelling of 1252777497 in words is "one billion, two hundred fifty-two million, seven hundred seventy-seven thousand, four hundred ninety-seven".