253025645 has 16 divisors (see below), whose sum is σ = 319652352. Its totient is φ = 191896320.

The previous prime is 253025587. The next prime is 253025653. The reversal of 253025645 is 546520352.

It is not a de Polignac number, because 253025645 - 2¹⁶ = 252960109 is a prime.

It is a super-3 number, since 3×253025645³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3260 + ... + 22730.

It is an arithmetic number, because the mean of its divisors is an integer number (19978272).

Almost surely, 2^253025645 is an apocalyptic number.

It is an amenable number.

253025645 is a deficient number, since it is larger than the sum of its proper divisors (66626707).

253025645 is a wasteful number, since it uses less digits than its factorization.

253025645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19612.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 253025645 is about 15906.7798438276. The cubic root of 253025645 is about 632.4917234514.

Adding to 253025645 its reverse (546520352), we get a palindrome (799545997).

The spelling of 253025645 in words is "two hundred fifty-three million, twenty-five thousand, six hundred forty-five".