2581455316 has 24 divisors (see below), whose sum is σ = 4936246560. Its totient is φ = 1171480800.

The previous prime is 2581455269. The next prime is 2581455323. The reversal of 2581455316 is 6135541852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20155 + ... + 74626.

It is an arithmetic number, because the mean of its divisors is an integer number (205676940).

Almost surely, 2^2581455316 is an apocalyptic number.

It is an amenable number.

2581455316 is a deficient number, since it is larger than the sum of its proper divisors (2354791244).

2581455316 is a wasteful number, since it uses less digits than its factorization.

2581455316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95415 (or 95413 counting only the distinct ones).

The product of its digits is 144000, while the sum is 40.

The square root of 2581455316 is about 50808.0241300525. The cubic root of 2581455316 is about 1371.7918047185.

The spelling of 2581455316 in words is "two billion, five hundred eighty-one million, four hundred fifty-five thousand, three hundred sixteen".