252220745 has 8 divisors (see below), whose sum is σ = 345902784. Its totient is φ = 172951344.

The previous prime is 252220729. The next prime is 252220751. The reversal of 252220745 is 547022252.

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

It is a cyclic number.

It is not a de Polignac number, because 252220745 - 2⁴ = 252220729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3603119 + ... + 3603188.

It is an arithmetic number, because the mean of its divisors is an integer number (43237848).

Almost surely, 2^252220745 is an apocalyptic number.

It is an amenable number.

252220745 is a deficient number, since it is larger than the sum of its proper divisors (93682039).

252220745 is an equidigital number, since it uses as much as digits as its factorization.

252220745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206319.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 252220745 is about 15881.4591584023. The cubic root of 252220745 is about 631.8203377912.

Adding to 252220745 its reverse (547022252), we get a palindrome (799242997).

It can be divided in two parts, 2522207 and 45, that added together give a palindrome (2522252).

The spelling of 252220745 in words is "two hundred fifty-two million, two hundred twenty thousand, seven hundred forty-five".