425534440 has 32 divisors (see below), whose sum is σ = 960196680. Its totient is φ = 169725952.

The previous prime is 425534419. The next prime is 425534471. The reversal of 425534440 is 44435524.

It can be written as a sum of positive squares in 4 ways, for example, as 223382916 + 202151524 = 14946^2 + 14218^2 .

It is a super-2 number, since 2×425534440² = 362159119252227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949 + ... + 29188.

Almost surely, 2^425534440 is an apocalyptic number.

425534440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425534440 is an abundant number, since it is smaller than the sum of its proper divisors (534662240).

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

425534440 is a wasteful number, since it uses less digits than its factorization.

425534440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30501 (or 30497 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 425534440 is about 20628.4861296218. The cubic root of 425534440 is about 752.1623168934.

Adding to 425534440 its reverse (44435524), we get a palindrome (469969964).

The spelling of 425534440 in words is "four hundred twenty-five million, five hundred thirty-four thousand, four hundred forty".