2561502210 has 64 divisors (see below), whose sum is σ = 6205248000. Its totient is φ = 676689152.

The previous prime is 2561502191. The next prime is 2561502221. The reversal of 2561502210 is 122051652.

It is a happy number.

It is a super-2 number, since 2×2561502210² = 13122587143669768200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3213532 + ... + 3214328.

It is an arithmetic number, because the mean of its divisors is an integer number (96957000).

Almost surely, 2^2561502210 is an apocalyptic number.

2561502210 is an abundant number, since it is smaller than the sum of its proper divisors (3643745790).

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

2561502210 is a wasteful number, since it uses less digits than its factorization.

2561502210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2561502210 is about 50611.2854015782. The cubic root of 2561502210 is about 1368.2482824126.

Adding to 2561502210 its reverse (122051652), we get a palindrome (2683553862).

The spelling of 2561502210 in words is "two billion, five hundred sixty-one million, five hundred two thousand, two hundred ten".