225251213551 has 32 divisors (see below), whose sum is σ = 291878935040. Its totient is φ = 168808593024.

The previous prime is 225251213543. The next prime is 225251213573. The reversal of 225251213551 is 155312152522.

It is a cyclic number.

It is not a de Polignac number, because 225251213551 - 2³ = 225251213543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225251213651) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 13085116 + ... + 13102318.

It is an arithmetic number, because the mean of its divisors is an integer number (9121216720).

Almost surely, 2^225251213551 is an apocalyptic number.

225251213551 is a deficient number, since it is larger than the sum of its proper divisors (66627721489).

225251213551 is a wasteful number, since it uses less digits than its factorization.

225251213551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24815.

The product of its digits is 30000, while the sum is 34.

The spelling of 225251213551 in words is "two hundred twenty-five billion, two hundred fifty-one million, two hundred thirteen thousand, five hundred fifty-one".