1225251505 has 8 divisors (see below), whose sum is σ = 1472760000. Its totient is φ = 978562416.

The previous prime is 1225251493. The next prime is 1225251539. The reversal of 1225251505 is 5051525221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225251505 - 2¹¹ = 1225249457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201555 + ... + 207544.

It is an arithmetic number, because the mean of its divisors is an integer number (184095000).

Almost surely, 2^1225251505 is an apocalyptic number.

It is an amenable number.

1225251505 is a deficient number, since it is larger than the sum of its proper divisors (247508495).

1225251505 is an equidigital number, since it uses as much as digits as its factorization.

1225251505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409703.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1225251505 is about 35003.5927441741. The cubic root of 1225251505 is about 1070.0607020036.

Adding to 1225251505 its reverse (5051525221), we get a palindrome (6276776726).

The spelling of 1225251505 in words is "one billion, two hundred twenty-five million, two hundred fifty-one thousand, five hundred five".