425663131 has 4 divisors (see below), whose sum is σ = 440341200. Its totient is φ = 410985064.

The previous prime is 425663129. The next prime is 425663141. The reversal of 425663131 is 131366524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 425663131 - 2¹ = 425663129 is a prime.

It is a super-2 number, since 2×425663131² = 362378202185446322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425663093 and 425663102.

It is not an unprimeable number, because it can be changed into a prime (425663141) 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 3 ways as a sum of consecutive naturals, for example, 7338991 + ... + 7339048.

It is an arithmetic number, because the mean of its divisors is an integer number (110085300).

Almost surely, 2^425663131 is an apocalyptic number.

425663131 is a deficient number, since it is larger than the sum of its proper divisors (14678069).

425663131 is a wasteful number, since it uses less digits than its factorization.

425663131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14678068.

The product of its digits is 12960, while the sum is 31.

The square root of 425663131 is about 20631.6051484125. The cubic root of 425663131 is about 752.2381327424.

The spelling of 425663131 in words is "four hundred twenty-five million, six hundred sixty-three thousand, one hundred thirty-one".