253225642 has 8 divisors (see below), whose sum is σ = 402181956. Its totient is φ = 119164992.

The previous prime is 253225631. The next prime is 253225657. The reversal of 253225642 is 246522352.

It can be written as a sum of positive squares in 2 ways, for example, as 246144721 + 7080921 = 15689^2 + 2661^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3723873 + ... + 3723940.

Almost surely, 2^253225642 is an apocalyptic number.

253225642 is a deficient number, since it is larger than the sum of its proper divisors (148956314).

253225642 is a wasteful number, since it uses less digits than its factorization.

253225642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447832.

The product of its digits is 28800, while the sum is 31.

The square root of 253225642 is about 15913.0651352906. The cubic root of 253225642 is about 632.6583246581.

Adding to 253225642 its reverse (246522352), we get a palindrome (499747994).

The spelling of 253225642 in words is "two hundred fifty-three million, two hundred twenty-five thousand, six hundred forty-two".