1799556225 has 24 divisors (see below), whose sum is σ = 3104628672. Its totient is φ = 918033600.

The previous prime is 1799556221. The next prime is 1799556251. The reversal of 1799556225 is 5226559971.

It is a happy number.

It is not a de Polignac number, because 1799556225 - 2² = 1799556221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1799556221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519886 + ... + 523335.

It is an arithmetic number, because the mean of its divisors is an integer number (129359528).

Almost surely, 2^1799556225 is an apocalyptic number.

1799556225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1799556225 is a deficient number, since it is larger than the sum of its proper divisors (1305072447).

1799556225 is a wasteful number, since it uses less digits than its factorization.

1799556225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043257 (or 1043252 counting only the distinct ones).

The product of its digits is 1701000, while the sum is 51.

The square root of 1799556225 is about 42421.1766102733. The cubic root of 1799556225 is about 1216.3404231504.

The spelling of 1799556225 in words is "one billion, seven hundred ninety-nine million, five hundred fifty-six thousand, two hundred twenty-five".