1225664059 has 4 divisors (see below), whose sum is σ = 1227202704. Its totient is φ = 1224125416.

The previous prime is 1225664051. The next prime is 1225664093. The reversal of 1225664059 is 9504665221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225664059 - 2³ = 1225664051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225664051) 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, 768127 + ... + 769720.

It is an arithmetic number, because the mean of its divisors is an integer number (306800676).

Almost surely, 2^1225664059 is an apocalyptic number.

1225664059 is a deficient number, since it is larger than the sum of its proper divisors (1538645).

1225664059 is an equidigital number, since it uses as much as digits as its factorization.

1225664059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538644.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1225664059 is about 35009.4852718517. The cubic root of 1225664059 is about 1070.1807884464.

The spelling of 1225664059 in words is "one billion, two hundred twenty-five million, six hundred sixty-four thousand, fifty-nine".