425241981 has 12 divisors (see below), whose sum is σ = 636988352. Its totient is φ = 283494492.

The previous prime is 425241959. The next prime is 425241991. The reversal of 425241981 is 189142524.

425241981 is a `hidden beast` number, since 42 + 524 + 1 + 98 + 1 = 666.

It is not a de Polignac number, because 425241981 - 2⁹ = 425241469 is a prime.

It is a super-2 number, since 2×425241981² = 361661484809608722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425241931) 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, 874741 + ... + 875226.

Almost surely, 2^425241981 is an apocalyptic number.

It is an amenable number.

425241981 is a deficient number, since it is larger than the sum of its proper divisors (211746371).

425241981 is an equidigital number, since it uses as much as digits as its factorization.

425241981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749982 (or 1749970 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 425241981 is about 20621.3961942445. The cubic root of 425241981 is about 751.9899633912.

The spelling of 425241981 in words is "four hundred twenty-five million, two hundred forty-one thousand, nine hundred eighty-one".