2625021 has 64 divisors (see below), whose sum is σ = 5068800. Its totient is φ = 1306368.

The previous prime is 2625017. The next prime is 2625023. The reversal of 2625021 is 1205262.

It is not a de Polignac number, because 2625021 - 2² = 2625017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2624985 and 2625003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2625023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61026 + ... + 61068.

It is an arithmetic number, because the mean of its divisors is an integer number (79200).

2^2625021 is an apocalyptic number.

2625021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2625021 is a deficient number, since it is larger than the sum of its proper divisors (2443779).

2625021 is a wasteful number, since it uses less digits than its factorization.

2625021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2625021 is about 1620.1916553297. The cubic root of 2625021 is about 137.9465766746.

The spelling of 2625021 in words is "two million, six hundred twenty-five thousand, twenty-one".