2525865 has 8 divisors (see below), whose sum is σ = 4041408. Its totient is φ = 1347120.

The previous prime is 2525851. The next prime is 2525933. The reversal of 2525865 is 5685252.

2525865 = 121² + 122² + ... + 210².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2525865 - 2⁶ = 2525801 is a prime.

2525865 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84181 + ... + 84210.

It is an arithmetic number, because the mean of its divisors is an integer number (505176).

2^2525865 is an apocalyptic number.

It is an amenable number.

2525865 is a deficient number, since it is larger than the sum of its proper divisors (1515543).

2525865 is a wasteful number, since it uses less digits than its factorization.

2525865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168399.

The product of its digits is 24000, while the sum is 33.

The square root of 2525865 is about 1589.2970144061. The cubic root of 2525865 is about 136.1873319524.

The spelling of 2525865 in words is "two million, five hundred twenty-five thousand, eight hundred sixty-five".