25251585 has 32 divisors (see below), whose sum is σ = 42985728. Its totient is φ = 12629760.

The previous prime is 25251581. The next prime is 25251593. The reversal of 25251585 is 58515252.

It is not a de Polignac number, because 25251585 - 2² = 25251581 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25251581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17595 + ... + 18975.

It is an arithmetic number, because the mean of its divisors is an integer number (1343304).

Almost surely, 2^25251585 is an apocalyptic number.

It is an amenable number.

25251585 is a deficient number, since it is larger than the sum of its proper divisors (17734143).

25251585 is a wasteful number, since it uses less digits than its factorization.

25251585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465.

The product of its digits is 20000, while the sum is 33.

The square root of 25251585 is about 5025.0955214802. The cubic root of 25251585 is about 293.3793538620.

The spelling of 25251585 in words is "twenty-five million, two hundred fifty-one thousand, five hundred eighty-five".