1225415001 has 4 divisors (see below), whose sum is σ = 1633886672. Its totient is φ = 816943332.

The previous prime is 1225414997. The next prime is 1225415017. The reversal of 1225415001 is 1005145221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1005145221 = 3 ⋅335048407.

It is not a de Polignac number, because 1225415001 - 2² = 1225414997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225415041) 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 3 ways as a sum of consecutive naturals, for example, 204235831 + ... + 204235836.

It is an arithmetic number, because the mean of its divisors is an integer number (408471668).

Almost surely, 2^1225415001 is an apocalyptic number.

It is an amenable number.

1225415001 is a deficient number, since it is larger than the sum of its proper divisors (408471671).

1225415001 is an equidigital number, since it uses as much as digits as its factorization.

1225415001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408471670.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1225415001 is about 35005.9280836832. The cubic root of 1225415001 is about 1070.1082957324.

The spelling of 1225415001 in words is "one billion, two hundred twenty-five million, four hundred fifteen thousand, one".