225740402651 has 4 divisors (see below), whose sum is σ = 226734853992. Its totient is φ = 224745951312.

The previous prime is 225740402627. The next prime is 225740402683. The reversal of 225740402651 is 156204047522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156204047522 = 2 ⋅78102023761.

It is a cyclic number.

It is not a de Polignac number, because 225740402651 - 2²⁶ = 225673293787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225740402051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497225330 + ... + 497225783.

It is an arithmetic number, because the mean of its divisors is an integer number (56683713498).

Almost surely, 2^225740402651 is an apocalyptic number.

225740402651 is a deficient number, since it is larger than the sum of its proper divisors (994451341).

225740402651 is an equidigital number, since it uses as much as digits as its factorization.

225740402651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994451340.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 225740402651 in words is "two hundred twenty-five billion, seven hundred forty million, four hundred two thousand, six hundred fifty-one".