253252217249 has 4 divisors (see below), whose sum is σ = 254578145280. Its totient is φ = 251926289220.

The previous prime is 253252217243. The next prime is 253252217261. The reversal of 253252217249 is 942712252352.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253252217249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253252217243) 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, 662963729 + ... + 662964110.

It is an arithmetic number, because the mean of its divisors is an integer number (63644536320).

Almost surely, 2^253252217249 is an apocalyptic number.

It is an amenable number.

253252217249 is a deficient number, since it is larger than the sum of its proper divisors (1325928031).

253252217249 is a wasteful number, since it uses less digits than its factorization.

253252217249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325928030.

The product of its digits is 604800, while the sum is 44.

The spelling of 253252217249 in words is "two hundred fifty-three billion, two hundred fifty-two million, two hundred seventeen thousand, two hundred forty-nine".