32506225 has 12 divisors (see below), whose sum is σ = 41069916. Its totient is φ = 25513280.

The previous prime is 32506219. The next prime is 32506231. The reversal of 32506225 is 52260523.

It is an interprime number because it is at equal distance from previous prime (32506219) and next prime (32506231).

It can be written as a sum of positive squares in 6 ways, for example, as 3873024 + 28633201 = 1968^2 + 5351^2 .

It is not a de Polignac number, because 32506225 - 2³ = 32506217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32506225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10942 + ... + 13591.

It is an arithmetic number, because the mean of its divisors is an integer number (3422493).

Almost surely, 2^32506225 is an apocalyptic number.

It is an amenable number.

32506225 is a deficient number, since it is larger than the sum of its proper divisors (8563691).

32506225 is a wasteful number, since it uses less digits than its factorization.

32506225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24596 (or 24591 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 32506225 is about 5701.4230679717. The cubic root of 32506225 is about 319.1455885598.

Adding to 32506225 its reverse (52260523), we get a palindrome (84766748).

The spelling of 32506225 in words is "thirty-two million, five hundred six thousand, two hundred twenty-five".