2500420100 has 18 divisors (see below), whose sum is σ = 5425911834. Its totient is φ = 1000168000.

The previous prime is 2500420099. The next prime is 2500420133. The reversal of 2500420100 is 10240052.

It can be written as a sum of positive squares in 3 ways, for example, as 228372544 + 2272047556 = 15112^2 + 47666^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12502001 + ... + 12502200.

Almost surely, 2^2500420100 is an apocalyptic number.

2500420100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2500420100 is an abundant number, since it is smaller than the sum of its proper divisors (2925491734).

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

2500420100 is a wasteful number, since it uses less digits than its factorization.

2500420100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25004215 (or 25004208 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2500420100 is about 50004.2008235308. The cubic root of 2500420100 is about 1357.2848258290.

Adding to 2500420100 its reverse (10240052), we get a palindrome (2510660152).

The spelling of 2500420100 in words is "two billion, five hundred million, four hundred twenty thousand, one hundred".