1253252636 has 12 divisors (see below), whose sum is σ = 2193512328. Its totient is φ = 626534832.

The previous prime is 1253252629. The next prime is 1253252639. The reversal of 1253252636 is 6362523521.

It is a junction number, because it is equal to n+sod(n) for n = 1253252596 and 1253252605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253252639) 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, 14870 + ... + 52226.

It is an arithmetic number, because the mean of its divisors is an integer number (182792694).

Almost surely, 2^1253252636 is an apocalyptic number.

It is an amenable number.

1253252636 is a deficient number, since it is larger than the sum of its proper divisors (940259692).

1253252636 is a wasteful number, since it uses less digits than its factorization.

1253252636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45748 (or 45746 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 1253252636 is about 35401.3083938998. The cubic root of 1253252636 is about 1078.1508813402.

The spelling of 1253252636 in words is "one billion, two hundred fifty-three million, two hundred fifty-two thousand, six hundred thirty-six".