420025160 has 32 divisors (see below), whose sum is σ = 945891000. Its totient is φ = 167861760.

The previous prime is 420025141. The next prime is 420025201. The reversal of 420025160 is 61520024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 400080004 + 19945156 = 20002^2 + 4466^2 .

It is a super-2 number, since 2×420025160² = 352842270066051200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 48866 + ... + 56814.

Almost surely, 2^420025160 is an apocalyptic number.

420025160 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420025160 is an abundant number, since it is smaller than the sum of its proper divisors (525865840).

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

420025160 is a wasteful number, since it uses less digits than its factorization.

420025160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281 (or 9277 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 420025160 is about 20494.5153638724. The cubic root of 420025160 is about 748.9021923938.

Adding to 420025160 its reverse (61520024), we get a palindrome (481545184).

The spelling of 420025160 in words is "four hundred twenty million, twenty-five thousand, one hundred sixty".