1225089799 has 4 divisors (see below), whose sum is σ = 1254970080. Its totient is φ = 1195209520.

The previous prime is 1225089797. The next prime is 1225089863. The reversal of 1225089799 is 9979805221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9979805221 = 8353 ⋅1194757.

It is a cyclic number.

It is not a de Polignac number, because 1225089799 - 2¹ = 1225089797 is a prime.

It is a super-2 number, since 2×1225089799² = 3001690031227720802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225089797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14940079 + ... + 14940160.

It is an arithmetic number, because the mean of its divisors is an integer number (313742520).

Almost surely, 2^1225089799 is an apocalyptic number.

1225089799 is a deficient number, since it is larger than the sum of its proper divisors (29880281).

1225089799 is an equidigital number, since it uses as much as digits as its factorization.

1225089799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29880280.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 1225089799 is about 35001.2828193482. The cubic root of 1225089799 is about 1070.0136251795.

The spelling of 1225089799 in words is "one billion, two hundred twenty-five million, eighty-nine thousand, seven hundred ninety-nine".