2523205420 has 24 divisors (see below), whose sum is σ = 5350179744. Its totient is φ = 999482496.

The previous prime is 2523205381. The next prime is 2523205441. The reversal of 2523205420 is 245023252.

It is a happy number.

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, 610369 + ... + 614488.

It is an arithmetic number, because the mean of its divisors is an integer number (222924156).

Almost surely, 2^2523205420 is an apocalyptic number.

2523205420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2523205420 is an abundant number, since it is smaller than the sum of its proper divisors (2826974324).

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

2523205420 is a wasteful number, since it uses less digits than its factorization.

2523205420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224969 (or 1224967 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 2523205420 is about 50231.5181932619. The cubic root of 2523205420 is about 1361.3951621353.

Adding to 2523205420 its reverse (245023252), we get a palindrome (2768228672).

The spelling of 2523205420 in words is "two billion, five hundred twenty-three million, two hundred five thousand, four hundred twenty".