225903615 has 16 divisors (see below), whose sum is σ = 413081088. Its totient is φ = 103270176.

The previous prime is 225903589. The next prime is 225903619. The reversal of 225903615 is 516309522.

It is not a de Polignac number, because 225903615 - 2¹⁰ = 225902591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225903619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075627 + ... + 1075836.

It is an arithmetic number, because the mean of its divisors is an integer number (25817568).

Almost surely, 2^225903615 is an apocalyptic number.

225903615 is a deficient number, since it is larger than the sum of its proper divisors (187177473).

225903615 is a wasteful number, since it uses less digits than its factorization.

225903615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151478.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 225903615 is about 15030.0903190899. The cubic root of 225903615 is about 609.0333296218.

It can be divided in two parts, 225 and 903615, that added together give a triangular number (903840 = T₁₃₄₄).

The spelling of 225903615 in words is "two hundred twenty-five million, nine hundred three thousand, six hundred fifteen".