1225251005 has 32 divisors (see below), whose sum is σ = 1691504640. Its totient is φ = 842633280.

The previous prime is 1225250969. The next prime is 1225251017. The reversal of 1225251005 is 5001525221.

It is not a de Polignac number, because 1225251005 - 2¹⁰ = 1225249981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1110284 + ... + 1111386.

It is an arithmetic number, because the mean of its divisors is an integer number (52859520).

Almost surely, 2^1225251005 is an apocalyptic number.

It is an amenable number.

1225251005 is a deficient number, since it is larger than the sum of its proper divisors (466253635).

1225251005 is a wasteful number, since it uses less digits than its factorization.

1225251005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 1225251005 is about 35003.5856020494. The cubic root of 1225251005 is about 1070.0605564470.

Adding to 1225251005 its reverse (5001525221), we get a palindrome (6226776226).

The spelling of 1225251005 in words is "one billion, two hundred twenty-five million, two hundred fifty-one thousand, five".