2545400540 has 48 divisors (see below), whose sum is σ = 5545169280. Its totient is φ = 980728320.

The previous prime is 2545400537. The next prime is 2545400567. The reversal of 2545400540 is 450045452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45134 + ... + 84426.

It is an arithmetic number, because the mean of its divisors is an integer number (115524360).

Almost surely, 2^2545400540 is an apocalyptic number.

2545400540 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 2545400540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2772584640).

2545400540 is an abundant number, since it is smaller than the sum of its proper divisors (2999768740).

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

2545400540 is a wasteful number, since it uses less digits than its factorization.

2545400540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39422 (or 39420 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 2545400540 is about 50451.9626972034. The cubic root of 2545400540 is about 1365.3753059253.

Adding to 2545400540 its reverse (450045452), we get a palindrome (2995445992).

The spelling of 2545400540 in words is "two billion, five hundred forty-five million, four hundred thousand, five hundred forty".