2551252540 has 24 divisors (see below), whose sum is σ = 5378012640. Its totient is φ = 1016618688.

The previous prime is 2551252519. The next prime is 2551252541. The reversal of 2551252540 is 452521552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551252541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237255 + ... + 247774.

It is an arithmetic number, because the mean of its divisors is an integer number (224083860).

Almost surely, 2^2551252540 is an apocalyptic number.

2551252540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551252540 is an abundant number, since it is smaller than the sum of its proper divisors (2826760100).

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

2551252540 is a wasteful number, since it uses less digits than its factorization.

2551252540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485301 (or 485299 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 2551252540 is about 50509.9251632786. The cubic root of 2551252540 is about 1366.4208598837.

The spelling of 2551252540 in words is "two billion, five hundred fifty-one million, two hundred fifty-two thousand, five hundred forty".