1225535101 has 4 divisors (see below), whose sum is σ = 1400611552. Its totient is φ = 1050458652.

The previous prime is 1225535039. The next prime is 1225535147. The reversal of 1225535101 is 1015355221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1225535101 - 2⁹ = 1225534589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225535191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87538215 + ... + 87538228.

It is an arithmetic number, because the mean of its divisors is an integer number (350152888).

Almost surely, 2^1225535101 is an apocalyptic number.

It is an amenable number.

1225535101 is a deficient number, since it is larger than the sum of its proper divisors (175076451).

1225535101 is an equidigital number, since it uses as much as digits as its factorization.

1225535101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175076450.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1225535101 is about 35007.6434653920. The cubic root of 1225535101 is about 1070.1432541771.

The spelling of 1225535101 in words is "one billion, two hundred twenty-five million, five hundred thirty-five thousand, one hundred one".