2621671025 has 6 divisors (see below), whose sum is σ = 3250872102. Its totient is φ = 2097336800.

The previous prime is 2621671009. The next prime is 2621671027. The reversal of 2621671025 is 5201761262.

It can be written as a sum of positive squares in 3 ways, for example, as 306810256 + 2314860769 = 17516^2 + 48113^2 .

It is not a de Polignac number, because 2621671025 - 2⁴ = 2621671009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2621670982 and 2621671000.

It is not an unprimeable number, because it can be changed into a prime (2621671027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52433396 + ... + 52433445.

It is an arithmetic number, because the mean of its divisors is an integer number (541812017).

Almost surely, 2^2621671025 is an apocalyptic number.

2621671025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2621671025 is a deficient number, since it is larger than the sum of its proper divisors (629201077).

2621671025 is a wasteful number, since it uses less digits than its factorization.

2621671025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104866851 (or 104866846 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2621671025 is about 51202.2560538108. The cubic root of 2621671025 is about 1378.8787056612.

The spelling of 2621671025 in words is "two billion, six hundred twenty-one million, six hundred seventy-one thousand, twenty-five".