2523450420 has 144 divisors (see below), whose sum is σ = 8531490240. Its totient is φ = 599989248.

The previous prime is 2523450409. The next prime is 2523450463. The reversal of 2523450420 is 240543252.

It is a happy number.

2523450420 is a `hidden beast` number, since 2 + 5 + 234 + 5 + 0 + 420 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36439 + ... + 79841.

It is an arithmetic number, because the mean of its divisors is an integer number (59246460).

Almost surely, 2^2523450420 is an apocalyptic number.

2523450420 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 2523450420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4265745120).

2523450420 is an abundant number, since it is smaller than the sum of its proper divisors (6008039820).

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

2523450420 is a wasteful number, since it uses less digits than its factorization.

2523450420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43454 (or 43449 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 2523450420 is about 50233.9568419610. The cubic root of 2523450420 is about 1361.4392239488.

Adding to 2523450420 its reverse (240543252), we get a palindrome (2763993672).

The spelling of 2523450420 in words is "two billion, five hundred twenty-three million, four hundred fifty thousand, four hundred twenty".