25066505 has 4 divisors (see below), whose sum is σ = 30079812. Its totient is φ = 20053200.

The previous prime is 25066493. The next prime is 25066511. The reversal of 25066505 is 50566052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18139081 + 6927424 = 4259^2 + 2632^2 .

It is not a de Polignac number, because 25066505 - 2⁶ = 25066441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2506646 + ... + 2506655.

It is an arithmetic number, because the mean of its divisors is an integer number (7519953).

Almost surely, 2^25066505 is an apocalyptic number.

It is an amenable number.

25066505 is a deficient number, since it is larger than the sum of its proper divisors (5013307).

25066505 is an equidigital number, since it uses as much as digits as its factorization.

25066505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5013306.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 25066505 is about 5006.6460829581. The cubic root of 25066505 is about 292.6608266457.

The spelling of 25066505 in words is "twenty-five million, sixty-six thousand, five hundred five".