2621055161525 has 6 divisors (see below), whose sum is σ = 3250108400322. Its totient is φ = 2096844129200.

The previous prime is 2621055161519. The next prime is 2621055161537. The reversal of 2621055161525 is 5251615501262.

It can be written as a sum of positive squares in 3 ways, for example, as 296204797009 + 2324850364516 = 544247^2 + 1524746^2 .

It is not a de Polignac number, because 2621055161525 - 2⁴ = 2621055161509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52421103206 + ... + 52421103255.

It is an arithmetic number, because the mean of its divisors is an integer number (541684733387).

Almost surely, 2^{2621055161525} is an apocalyptic number.

2621055161525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2621055161525 is a deficient number, since it is larger than the sum of its proper divisors (629053238797).

2621055161525 is a wasteful number, since it uses less digits than its factorization.

2621055161525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104842206471 (or 104842206466 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 2621055161525 in words is "two trillion, six hundred twenty-one billion, fifty-five million, one hundred sixty-one thousand, five hundred twenty-five".