2545323420 has 48 divisors (see below), whose sum is σ = 7129116288. Its totient is φ = 678542400.

The previous prime is 2545323413. The next prime is 2545323421. The reversal of 2545323420 is 243235452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545323421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335307 + ... + 342813.

It is an arithmetic number, because the mean of its divisors is an integer number (148523256).

Almost surely, 2^2545323420 is an apocalyptic number.

2545323420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545323420 is an abundant number, since it is smaller than the sum of its proper divisors (4583792868).

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

2545323420 is a wasteful number, since it uses less digits than its factorization.

2545323420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13170 (or 13168 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 2545323420 is about 50451.1984000380. The cubic root of 2545323420 is about 1365.3615165032.

Adding to 2545323420 its reverse (243235452), we get a palindrome (2788558872).

The spelling of 2545323420 in words is "two billion, five hundred forty-five million, three hundred twenty-three thousand, four hundred twenty".