2556411420 has 48 divisors (see below), whose sum is σ = 7197529248. Its totient is φ = 677940480.

The previous prime is 2556411401. The next prime is 2556411433. The reversal of 2556411420 is 241146552.

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

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, 106839 + ... + 128558.

It is an arithmetic number, because the mean of its divisors is an integer number (149948526).

Almost surely, 2^2556411420 is an apocalyptic number.

2556411420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2556411420 is an abundant number, since it is smaller than the sum of its proper divisors (4641117828).

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

2556411420 is a wasteful number, since it uses less digits than its factorization.

2556411420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235590 (or 235588 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2556411420 is about 50560.9673562522. The cubic root of 2556411420 is about 1367.3412516097.

Adding to 2556411420 its reverse (241146552), we get a palindrome (2797557972).

The spelling of 2556411420 in words is "two billion, five hundred fifty-six million, four hundred eleven thousand, four hundred twenty".