1225055001 has 32 divisors (see below), whose sum is σ = 1763560960. Its totient is φ = 754085376.

The previous prime is 1225054981. The next prime is 1225055063. The reversal of 1225055001 is 1005505221.

It is not a de Polignac number, because 1225055001 - 2²⁷ = 1090837273 is a prime.

It is a super-2 number, since 2×1225055001² = 3001519510950220002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225055101) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 368790 + ... + 372096.

It is an arithmetic number, because the mean of its divisors is an integer number (55111280).

Almost surely, 2^1225055001 is an apocalyptic number.

It is an amenable number.

1225055001 is a deficient number, since it is larger than the sum of its proper divisors (538505959).

1225055001 is a wasteful number, since it uses less digits than its factorization.

1225055001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1225055001 is about 35000.7857197521. The cubic root of 1225055001 is about 1070.0034940346.

The spelling of 1225055001 in words is "one billion, two hundred twenty-five million, fifty-five thousand, one".