1225605560 has 32 divisors (see below), whose sum is σ = 2758849200. Its totient is φ = 490022400.

The previous prime is 1225605559. The next prime is 1225605581. The reversal of 1225605560 is 655065221.

It is a congruent number.

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, 106571 + ... + 117509.

Almost surely, 2^1225605560 is an apocalyptic number.

1225605560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225605560 is an abundant number, since it is smaller than the sum of its proper divisors (1533243640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225605560 is a wasteful number, since it uses less digits than its factorization.

1225605560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13751 (or 13747 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1225605560 is about 35008.6497883023. The cubic root of 1225605560 is about 1070.1637621655.

The spelling of 1225605560 in words is "one billion, two hundred twenty-five million, six hundred five thousand, five hundred sixty".