2500509420 has 96 divisors (see below), whose sum is σ = 7814016000. Its totient is φ = 663832512.

The previous prime is 2500509391. The next prime is 2500509433. The reversal of 2500509420 is 249050052.

2500509420 is a `hidden beast` number, since 2 + 500 + 50 + 94 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112381 + ... + 132779.

It is an arithmetic number, because the mean of its divisors is an integer number (81396000).

Almost surely, 2^2500509420 is an apocalyptic number.

2500509420 is a gapful number since it is divisible by the number (20) 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 2500509420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3907008000).

2500509420 is an abundant number, since it is smaller than the sum of its proper divisors (5313506580).

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

2500509420 is a wasteful number, since it uses less digits than its factorization.

2500509420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20644 (or 20636 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2500509420 is about 50005.0939405177. The cubic root of 2500509420 is about 1357.3009872782.

Adding to 2500509420 its reverse (249050052), we get a palindrome (2749559472).

The spelling of 2500509420 in words is "two billion, five hundred million, five hundred nine thousand, four hundred twenty".