225451515551 has 2 divisors, whose sum is σ = 225451515552. Its totient is φ = 225451515550.

The previous prime is 225451515533. The next prime is 225451515581. The reversal of 225451515551 is 155515154522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225451515551 - 2¹⁰ = 225451514527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225451515499 and 225451515508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225451515581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112725757775 + 112725757776.

It is an arithmetic number, because the mean of its divisors is an integer number (112725757776).

Almost surely, 2^225451515551 is an apocalyptic number.

225451515551 is a deficient number, since it is larger than the sum of its proper divisors (1).

225451515551 is an equidigital number, since it uses as much as digits as its factorization.

225451515551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250000, while the sum is 41.

The spelling of 225451515551 in words is "two hundred twenty-five billion, four hundred fifty-one million, five hundred fifteen thousand, five hundred fifty-one".