2620564025 has 24 divisors (see below), whose sum is σ = 3445341984. Its totient is φ = 1970438400.

The previous prime is 2620564021. The next prime is 2620564027. The reversal of 2620564025 is 5204650262.

It is not a de Polignac number, because 2620564025 - 2² = 2620564021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2620563982 and 2620564000.

It is not an unprimeable number, because it can be changed into a prime (2620564021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340874 + ... + 348476.

It is an arithmetic number, because the mean of its divisors is an integer number (143555916).

Almost surely, 2^2620564025 is an apocalyptic number.

2620564025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2620564025 is a deficient number, since it is larger than the sum of its proper divisors (824777959).

2620564025 is a wasteful number, since it uses less digits than its factorization.

2620564025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441 (or 8436 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2620564025 is about 51191.4448418874. Note that the first 3 decimals coincide. The cubic root of 2620564025 is about 1378.6846012641.

The spelling of 2620564025 in words is "two billion, six hundred twenty million, five hundred sixty-four thousand, twenty-five".