25575505 has 8 divisors (see below), whose sum is σ = 31007592. Its totient is φ = 20249088.

The previous prime is 25575493. The next prime is 25575509. The reversal of 25575505 is 50557552.

It can be written as a sum of positive squares in 4 ways, for example, as 565504 + 25010001 = 752^2 + 5001^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25575505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25575509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25882 + ... + 26851.

It is an arithmetic number, because the mean of its divisors is an integer number (3875949).

Almost surely, 2^25575505 is an apocalyptic number.

It is an amenable number.

25575505 is a deficient number, since it is larger than the sum of its proper divisors (5432087).

25575505 is an equidigital number, since it uses as much as digits as its factorization.

25575505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52835.

The product of its (nonzero) digits is 43750, while the sum is 34.

The square root of 25575505 is about 5057.2230522294. The cubic root of 25575505 is about 294.6284895281.

The spelling of 25575505 in words is "twenty-five million, five hundred seventy-five thousand, five hundred five".