225553501 has 8 divisors (see below), whose sum is σ = 241506360. Its totient is φ = 209899008.

The previous prime is 225553487. The next prime is 225553507. The reversal of 225553501 is 105355522.

It can be written as a sum of positive squares in 4 ways, for example, as 103428900 + 122124601 = 10170^2 + 11051^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 225553501 - 2¹¹ = 225551453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225553501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225553507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73026 + ... + 76051.

It is an arithmetic number, because the mean of its divisors is an integer number (30188295).

Almost surely, 2^225553501 is an apocalyptic number.

It is an amenable number.

225553501 is a deficient number, since it is larger than the sum of its proper divisors (15952859).

225553501 is a wasteful number, since it uses less digits than its factorization.

225553501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149183.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 225553501 is about 15018.4387004775. The cubic root of 225553501 is about 608.7185326113.

The spelling of 225553501 in words is "two hundred twenty-five million, five hundred fifty-three thousand, five hundred one".