1225223580261 has 8 divisors (see below), whose sum is σ = 1637175111264. Its totient is φ = 815043884720.

The previous prime is 1225223580257. The next prime is 1225223580277. The reversal of 1225223580261 is 1620853225221.

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 1225223580261 - 2² = 1225223580257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225223580221) 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, 442957251 + ... + 442960016.

It is an arithmetic number, because the mean of its divisors is an integer number (204646888908).

Almost surely, 2^{1225223580261} is an apocalyptic number.

It is an amenable number.

1225223580261 is a deficient number, since it is larger than the sum of its proper divisors (411951531003).

1225223580261 is an equidigital number, since it uses as much as digits as its factorization.

1225223580261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885917731.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 1225223580261 in words is "one trillion, two hundred twenty-five billion, two hundred twenty-three million, five hundred eighty thousand, two hundred sixty-one".