1225540895 has 4 divisors (see below), whose sum is σ = 1470649080. Its totient is φ = 980432712.

The previous prime is 1225540879. The next prime is 1225540909. The reversal of 1225540895 is 5980455221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225540895 - 2⁴ = 1225540879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122554085 + ... + 122554094.

It is an arithmetic number, because the mean of its divisors is an integer number (367662270).

Almost surely, 2^1225540895 is an apocalyptic number.

1225540895 is a deficient number, since it is larger than the sum of its proper divisors (245108185).

1225540895 is an equidigital number, since it uses as much as digits as its factorization.

1225540895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245108184.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 1225540895 is about 35007.7262186506. The cubic root of 1225540895 is about 1070.1449406242.

The spelling of 1225540895 in words is "one billion, two hundred twenty-five million, five hundred forty thousand, eight hundred ninety-five".