1556225116 has 6 divisors (see below), whose sum is σ = 2723393960. Its totient is φ = 778112556.

The previous prime is 1556225113. The next prime is 1556225117. The reversal of 1556225116 is 6115226551.

It is a super-2 number, since 2×1556225116² = 4843673223338426912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556225113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194528136 + ... + 194528143.

Almost surely, 2^1556225116 is an apocalyptic number.

It is an amenable number.

1556225116 is a deficient number, since it is larger than the sum of its proper divisors (1167168844).

1556225116 is a wasteful number, since it uses less digits than its factorization.

1556225116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389056283 (or 389056281 counting only the distinct ones).

The product of its digits is 18000, while the sum is 34.

The square root of 1556225116 is about 39449.0192020030. The cubic root of 1556225116 is about 1158.8417680165.

The spelling of 1556225116 in words is "one billion, five hundred fifty-six million, two hundred twenty-five thousand, one hundred sixteen".