2581254522 has 72 divisors (see below), whose sum is σ = 7025604768. Its totient is φ = 670451760.

The previous prime is 2581254521. The next prime is 2581254541. The reversal of 2581254522 is 2254521852.

2581254522 is a `hidden beast` number, since 2 + 5 + 8 + 125 + 4 + 522 = 666.

It is not an unprimeable number, because it can be changed into a prime (2581254521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 69408 + ... + 99899.

It is an arithmetic number, because the mean of its divisors is an integer number (97577844).

Almost surely, 2^2581254522 is an apocalyptic number.

2581254522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2581254522 is an abundant number, since it is smaller than the sum of its proper divisors (4444350246).

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

2581254522 is a wasteful number, since it uses less digits than its factorization.

2581254522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169344 (or 169330 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The square root of 2581254522 is about 50806.0480848491. The cubic root of 2581254522 is about 1371.7562363185.

The spelling of 2581254522 in words is "two billion, five hundred eighty-one million, two hundred fifty-four thousand, five hundred twenty-two".