1225751101 has 2 divisors, whose sum is σ = 1225751102. Its totient is φ = 1225751100.

The previous prime is 1225751099. The next prime is 1225751147. The reversal of 1225751101 is 1011575221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 904445476 + 321305625 = 30074^2 + 17925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225751101 - 2¹ = 1225751099 is a prime.

Together with 1225751099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225751701) 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 as a sum of consecutive naturals, namely, 612875550 + 612875551.

It is an arithmetic number, because the mean of its divisors is an integer number (612875551).

Almost surely, 2^1225751101 is an apocalyptic number.

It is an amenable number.

1225751101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225751101 is an equidigital number, since it uses as much as digits as its factorization.

1225751101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 25.

The square root of 1225751101 is about 35010.7283700297. The cubic root of 1225751101 is about 1070.2061212366.

The spelling of 1225751101 in words is "one billion, two hundred twenty-five million, seven hundred fifty-one thousand, one hundred one".