1225911559 has 8 divisors (see below), whose sum is σ = 1295976240. Its totient is φ = 1156401216.

The previous prime is 1225911527. The next prime is 1225911587. The reversal of 1225911559 is 9551195221.

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 1225911559 - 2⁵ = 1225911527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225912559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134032 + ... + 142885.

It is an arithmetic number, because the mean of its divisors is an integer number (161997030).

Almost surely, 2^1225911559 is an apocalyptic number.

1225911559 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1225911559 is a deficient number, since it is larger than the sum of its proper divisors (70064681).

1225911559 is a wasteful number, since it uses less digits than its factorization.

1225911559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277169.

The product of its digits is 40500, while the sum is 40.

The square root of 1225911559 is about 35013.0198497645. The cubic root of 1225911559 is about 1070.2528179493.

The spelling of 1225911559 in words is "one billion, two hundred twenty-five million, nine hundred eleven thousand, five hundred fifty-nine".