63425340 has 144 divisors (see below), whose sum is σ = 212599296. Its totient is φ = 15177600.

The previous prime is 63425339. The next prime is 63425359. The reversal of 63425340 is 4352436.

63425340 is a `hidden beast` number, since 634 + 25 + 3 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203785 + ... + 204095.

It is an arithmetic number, because the mean of its divisors is an integer number (1476384).

Almost surely, 2^63425340 is an apocalyptic number.

63425340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63425340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106299648).

63425340 is an abundant number, since it is smaller than the sum of its proper divisors (149173956).

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

63425340 is a wasteful number, since it uses less digits than its factorization.

63425340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 63425340 is about 7964.0027624305. The cubic root of 63425340 is about 398.7991904148.

Adding to 63425340 its reverse (4352436), we get a palindrome (67777776).

The spelling of 63425340 in words is "sixty-three million, four hundred twenty-five thousand, three hundred forty".