425440631 has 8 divisors (see below), whose sum is σ = 530419584. Its totient is φ = 331512120.

The previous prime is 425440619. The next prime is 425440649. The reversal of 425440631 is 136044524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425440631 - 2⁶ = 425440567 is a prime.

It is a super-2 number, since 2×425440631² = 361999461011356322, 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 = 425440594 and 425440603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425440651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2762525 + ... + 2762678.

It is an arithmetic number, because the mean of its divisors is an integer number (66302448).

Almost surely, 2^425440631 is an apocalyptic number.

425440631 is a deficient number, since it is larger than the sum of its proper divisors (104978953).

425440631 is a wasteful number, since it uses less digits than its factorization.

425440631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525221.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 425440631 is about 20626.2122310423. The cubic root of 425440631 is about 752.1070414767.

The spelling of 425440631 in words is "four hundred twenty-five million, four hundred forty thousand, six hundred thirty-one".