2405012500 has 72 divisors (see below), whose sum is σ = 5739195168. Its totient is φ = 874500000.

The previous prime is 2405012479. The next prime is 2405012629. The reversal of 2405012500 is 52105042.

It is a congruent number.

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, 128755 + ... + 146245.

It is an arithmetic number, because the mean of its divisors is an integer number (79711044).

Almost surely, 2^2405012500 is an apocalyptic number.

2405012500 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 2405012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2869597584).

2405012500 is an abundant number, since it is smaller than the sum of its proper divisors (3334182668).

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

2405012500 is a wasteful number, since it uses less digits than its factorization.

2405012500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17531 (or 17509 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2405012500 is about 49040.9267856960. The cubic root of 2405012500 is about 1339.7973444178.

Adding to 2405012500 its reverse (52105042), we get a palindrome (2457117542).

The spelling of 2405012500 in words is "two billion, four hundred five million, twelve thousand, five hundred".