2581226116 has 36 divisors (see below), whose sum is σ = 5396671308. Its totient is φ = 1076338368.

The previous prime is 2581226111. The next prime is 2581226119. The reversal of 2581226116 is 6116221852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1235803716 + 1345422400 = 35154^2 + 36680^2 .

It is not an unprimeable number, because it can be changed into a prime (2581226111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170715 + ... + 185218.

Almost surely, 2^2581226116 is an apocalyptic number.

It is an amenable number.

2581226116 is an abundant number, since it is smaller than the sum of its proper divisors (2815445192).

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

2581226116 is a wasteful number, since it uses less digits than its factorization.

2581226116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355988 (or 355979 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 2581226116 is about 50805.7685307486. The cubic root of 2581226116 is about 1371.7512043660.

Adding to 2581226116 its reverse (6116221852), we get a palindrome (8697447968).

The spelling of 2581226116 in words is "two billion, five hundred eighty-one million, two hundred twenty-six thousand, one hundred sixteen".