2925865 has 16 divisors (see below), whose sum is σ = 3656016. Its totient is φ = 2246400.

The previous prime is 2925859. The next prime is 2925889. The reversal of 2925865 is 5685292.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 929296 + 1996569 = 964^2 + 1413^2 .

It is not a de Polignac number, because 2925865 - 2⁹ = 2925353 is a prime.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (43200) is a multiple of the sum of its prime divisors (300).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16075 + ... + 16255.

It is an arithmetic number, because the mean of its divisors is an integer number (228501).

2^2925865 is an apocalyptic number.

It is an amenable number.

2925865 is a deficient number, since it is larger than the sum of its proper divisors (730151).

2925865 is a wasteful number, since it uses less digits than its factorization.

2925865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300.

The product of its digits is 43200, while the sum is 37.

The square root of 2925865 is about 1710.5160040175. The cubic root of 2925865 is about 143.0270214801.

It can be divided in two parts, 2925 and 865, that multiplied together give a triangular number (2530125 = T₂₂₄₉).

The spelling of 2925865 in words is "two million, nine hundred twenty-five thousand, eight hundred sixty-five".