253156205 has 4 divisors (see below), whose sum is σ = 303787452. Its totient is φ = 202524960.

The previous prime is 253156201. The next prime is 253156213. The reversal of 253156205 is 502651352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46199209 + 206956996 = 6797^2 + 14386^2 .

It is not a de Polignac number, because 253156205 - 2² = 253156201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253156201) 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, 25315616 + ... + 25315625.

It is an arithmetic number, because the mean of its divisors is an integer number (75946863).

Almost surely, 2^253156205 is an apocalyptic number.

It is an amenable number.

253156205 is a deficient number, since it is larger than the sum of its proper divisors (50631247).

253156205 is an equidigital number, since it uses as much as digits as its factorization.

253156205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50631246.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 253156205 is about 15910.8832250130. The cubic root of 253156205 is about 632.6004922947.

The spelling of 253156205 in words is "two hundred fifty-three million, one hundred fifty-six thousand, two hundred five".