253555825 has 6 divisors (see below), whose sum is σ = 314409254. Its totient is φ = 202844640.

The previous prime is 253555823. The next prime is 253555843. The reversal of 253555825 is 528555352.

It can be written as a sum of positive squares in 3 ways, for example, as 29724304 + 223831521 = 5452^2 + 14961^2 .

It is not a de Polignac number, because 253555825 - 2¹ = 253555823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253555823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5071092 + ... + 5071141.

Almost surely, 2^253555825 is an apocalyptic number.

253555825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253555825 is a deficient number, since it is larger than the sum of its proper divisors (60853429).

253555825 is a wasteful number, since it uses less digits than its factorization.

253555825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10142243 (or 10142238 counting only the distinct ones).

The product of its digits is 300000, while the sum is 40.

The square root of 253555825 is about 15923.4363439554. The cubic root of 253555825 is about 632.9331813632.

The spelling of 253555825 in words is "two hundred fifty-three million, five hundred fifty-five thousand, eight hundred twenty-five".