425136420 has 72 divisors (see below), whose sum is σ = 1296804600. Its totient is φ = 112734720.

The previous prime is 425136403. The next prime is 425136443. The reversal of 425136420 is 24631524.

425136420 is a `hidden beast` number, since 4 + 2 + 5 + 13 + 642 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 116964 + 425019456 = 342^2 + 20616^2 .

It is a super-2 number, since 2×425136420² = 361481951220832800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26056 + ... + 39104.

It is an arithmetic number, because the mean of its divisors is an integer number (18011175).

Almost surely, 2^425136420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425136420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648402300).

425136420 is an abundant number, since it is smaller than the sum of its proper divisors (871668180).

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

425136420 is a wasteful number, since it uses less digits than its factorization.

425136420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13245 (or 13240 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 425136420 is about 20618.8365336165. The cubic root of 425136420 is about 751.9277342092.

Adding to 425136420 its reverse (24631524), we get a palindrome (449767944).

The spelling of 425136420 in words is "four hundred twenty-five million, one hundred thirty-six thousand, four hundred twenty".