1787428425 has 12 divisors (see below), whose sum is σ = 2955215120. Its totient is φ = 953295120.

The previous prime is 1787428421. The next prime is 1787428469. The reversal of 1787428425 is 5248247871.

It is not a de Polignac number, because 1787428425 - 2² = 1787428421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1787428421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11916115 + ... + 11916264.

Almost surely, 2^1787428425 is an apocalyptic number.

1787428425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1787428425 is a deficient number, since it is larger than the sum of its proper divisors (1167786695).

1787428425 is a wasteful number, since it uses less digits than its factorization.

1787428425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23832392 (or 23832387 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 48.

The square root of 1787428425 is about 42277.9898410509. The cubic root of 1787428425 is about 1213.6018226950.

The spelling of 1787428425 in words is "one billion, seven hundred eighty-seven million, four hundred twenty-eight thousand, four hundred twenty-five".