1225803755 has 24 divisors (see below), whose sum is σ = 1661993424. Its totient is φ = 860720000.

The previous prime is 1225803749. The next prime is 1225803763. The reversal of 1225803755 is 5573085221.

It is not a de Polignac number, because 1225803755 - 2⁸ = 1225803499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33005 + ... + 59505.

It is an arithmetic number, because the mean of its divisors is an integer number (69249726).

Almost surely, 2^1225803755 is an apocalyptic number.

1225803755 is a deficient number, since it is larger than the sum of its proper divisors (436189669).

1225803755 is a wasteful number, since it uses less digits than its factorization.

1225803755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26575 (or 26546 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 1225803755 is about 35011.4803314570. The cubic root of 1225803755 is about 1070.2214451269.

Adding to 1225803755 its reverse (5573085221), we get a palindrome (6798888976).

The spelling of 1225803755 in words is "one billion, two hundred twenty-five million, eight hundred three thousand, seven hundred fifty-five".