1155425101 has 2 divisors, whose sum is σ = 1155425102. Its totient is φ = 1155425100.

The previous prime is 1155425099. The next prime is 1155425147. The reversal of 1155425101 is 1015245511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1135622601 + 19802500 = 33699^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155425101 - 2¹ = 1155425099 is a prime.

Together with 1155425099, 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 (1155425191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577712550 + 577712551.

It is an arithmetic number, because the mean of its divisors is an integer number (577712551).

Almost surely, 2^1155425101 is an apocalyptic number.

It is an amenable number.

1155425101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155425101 is an equidigital number, since it uses as much as digits as its factorization.

1155425101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 1155425101 is about 33991.5445515499. The cubic root of 1155425101 is about 1049.3344538161.

The spelling of 1155425101 in words is "one billion, one hundred fifty-five million, four hundred twenty-five thousand, one hundred one".