25520601 has 4 divisors (see below), whose sum is σ = 34027472. Its totient is φ = 17013732.

The previous prime is 25520597. The next prime is 25520611. The reversal of 25520601 is 10602552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25520601 - 2² = 25520597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25520611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4253431 + ... + 4253436.

It is an arithmetic number, because the mean of its divisors is an integer number (8506868).

Almost surely, 2^25520601 is an apocalyptic number.

It is an amenable number.

25520601 is a deficient number, since it is larger than the sum of its proper divisors (8506871).

25520601 is an equidigital number, since it uses as much as digits as its factorization.

25520601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8506870.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 25520601 is about 5051.7918603205. The cubic root of 25520601 is about 294.4175080721.

The spelling of 25520601 in words is "twenty-five million, five hundred twenty thousand, six hundred one".