253569652249 has 27 divisors (see below), whose sum is σ = 284468539647. Its totient is φ = 225948040128.

The previous prime is 253569652243. The next prime is 253569652253. The reversal of 253569652249 is 942256965352.

The square root of 253569652249 is 503557.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 197415819225 + 56153833024 = 444315^2 + 236968^2 .

It is not a de Polignac number, because 253569652249 - 2¹³ = 253569644057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253569652193 and 253569652202.

It is not an unprimeable number, because it can be changed into a prime (253569652243) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 162648132 + ... + 162649690.

Almost surely, 2^253569652249 is an apocalyptic number.

253569652249 is the 503557-th square number.

253569652249 is the 251779-th centered octagonal number.

It is an amenable number.

253569652249 is a deficient number, since it is larger than the sum of its proper divisors (30898887398).

253569652249 is an frugal number, since it uses more digits than its factorization.

253569652249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190 (or 1595 counting only the distinct ones).

The product of its digits is 34992000, while the sum is 58.

The spelling of 253569652249 in words is "two hundred fifty-three billion, five hundred sixty-nine million, six hundred fifty-two thousand, two hundred forty-nine".