425643340 has 12 divisors (see below), whose sum is σ = 893851056. Its totient is φ = 170257328.

The previous prime is 425643329. The next prime is 425643347. The reversal of 425643340 is 43346524.

It is not an unprimeable number, because it can be changed into a prime (425643347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10641064 + ... + 10641103.

It is an arithmetic number, because the mean of its divisors is an integer number (74487588).

Almost surely, 2^425643340 is an apocalyptic number.

It is an amenable number.

425643340 is an abundant number, since it is smaller than the sum of its proper divisors (468207716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425643340 is a wasteful number, since it uses less digits than its factorization.

425643340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21282176 (or 21282174 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 425643340 is about 20631.1255146199. The cubic root of 425643340 is about 752.2264742465.

Adding to 425643340 its reverse (43346524), we get a palindrome (468989864).

The spelling of 425643340 in words is "four hundred twenty-five million, six hundred forty-three thousand, three hundred forty".