425190987 has 36 divisors (see below), whose sum is σ = 700092120. Its totient is φ = 247867776.

The previous prime is 425190979. The next prime is 425190991. The reversal of 425190987 is 789091524.

425190987 is a `hidden beast` number, since 42 + 519 + 0 + 98 + 7 = 666.

It is not a de Polignac number, because 425190987 - 2³ = 425190979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425190907) 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 35 ways as a sum of consecutive naturals, for example, 21543 + ... + 36255.

Almost surely, 2^425190987 is an apocalyptic number.

425190987 is a deficient number, since it is larger than the sum of its proper divisors (274901133).

425190987 is a wasteful number, since it uses less digits than its factorization.

425190987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14764 (or 14748 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 425190987 is about 20620.1597229507. The cubic root of 425190987 is about 751.9599032444.

The spelling of 425190987 in words is "four hundred twenty-five million, one hundred ninety thousand, nine hundred eighty-seven".