1252631197 has 4 divisors (see below), whose sum is σ = 1253824096. Its totient is φ = 1251438300.

The previous prime is 1252631153. The next prime is 1252631243. The reversal of 1252631197 is 7911362521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7911362521 = 12763 ⋅619867.

It is a cyclic number.

It is not a de Polignac number, because 1252631197 - 2¹⁵ = 1252598429 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 (1252631117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594873 + ... + 596974.

It is an arithmetic number, because the mean of its divisors is an integer number (313456024).

Almost surely, 2^1252631197 is an apocalyptic number.

It is an amenable number.

1252631197 is a deficient number, since it is larger than the sum of its proper divisors (1192899).

1252631197 is a wasteful number, since it uses less digits than its factorization.

1252631197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192898.

The product of its digits is 22680, while the sum is 37.

The square root of 1252631197 is about 35392.5302429764. The cubic root of 1252631197 is about 1077.9726475827.

The spelling of 1252631197 in words is "one billion, two hundred fifty-two million, six hundred thirty-one thousand, one hundred ninety-seven".