1253642582 has 8 divisors (see below), whose sum is σ = 1882187616. Its totient is φ = 626246712.

The previous prime is 1253642581. The next prime is 1253642633. The reversal of 1253642582 is 2852463521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253642581) 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, 284558 + ... + 288929.

It is an arithmetic number, because the mean of its divisors is an integer number (235273452).

Almost surely, 2^1253642582 is an apocalyptic number.

1253642582 is a deficient number, since it is larger than the sum of its proper divisors (628545034).

1253642582 is a wasteful number, since it uses less digits than its factorization.

1253642582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574582.

The product of its digits is 115200, while the sum is 38.

The square root of 1253642582 is about 35406.8154738604. The cubic root of 1253642582 is about 1078.2626909399.

The spelling of 1253642582 in words is "one billion, two hundred fifty-three million, six hundred forty-two thousand, five hundred eighty-two".