1225088815 has 16 divisors (see below), whose sum is σ = 1508474016. Its totient is φ = 954572800.

The previous prime is 1225088801. The next prime is 1225088861. The reversal of 1225088815 is 5188805221.

It is not a de Polignac number, because 1225088815 - 2⁹ = 1225088303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126744 + ... + 136066.

It is an arithmetic number, because the mean of its divisors is an integer number (94279626).

Almost surely, 2^1225088815 is an apocalyptic number.

1225088815 is a deficient number, since it is larger than the sum of its proper divisors (283385201).

1225088815 is an equidigital number, since it uses as much as digits as its factorization.

1225088815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010.

The product of its (nonzero) digits is 51200, while the sum is 40.

The square root of 1225088815 is about 35001.2687627177. The cubic root of 1225088815 is about 1070.0133386988.

The spelling of 1225088815 in words is "one billion, two hundred twenty-five million, eighty-eight thousand, eight hundred fifteen".