2551255340 has 24 divisors (see below), whose sum is σ = 5488312032. Its totient is φ = 995611520.

The previous prime is 2551255321. The next prime is 2551255349. The reversal of 2551255340 is 435521552.

It is a junction number, because it is equal to n+sod(n) for n = 2551255297 and 2551255306.

It is not an unprimeable number, because it can be changed into a prime (2551255349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554824 + ... + 1556463.

It is an arithmetic number, because the mean of its divisors is an integer number (228679668).

Almost surely, 2^2551255340 is an apocalyptic number.

2551255340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551255340 is an abundant number, since it is smaller than the sum of its proper divisors (2937056692).

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

2551255340 is a wasteful number, since it uses less digits than its factorization.

2551255340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111337 (or 3111335 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 2551255340 is about 50509.9528805957. The cubic root of 2551255340 is about 1366.4213597658.

Adding to 2551255340 its reverse (435521552), we get a palindrome (2986776892).

The spelling of 2551255340 in words is "two billion, five hundred fifty-one million, two hundred fifty-five thousand, three hundred forty".