25265501 has 4 divisors (see below), whose sum is σ = 25276992. Its totient is φ = 25254012.

The previous prime is 25265479. The next prime is 25265509. The reversal of 25265501 is 10556252.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25265501 - 2¹⁴ = 25249117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25265509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301 + ... + 7226.

It is an arithmetic number, because the mean of its divisors is an integer number (6319248).

Almost surely, 2^25265501 is an apocalyptic number.

It is an amenable number.

25265501 is a deficient number, since it is larger than the sum of its proper divisors (11491).

25265501 is an equidigital number, since it uses as much as digits as its factorization.

25265501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11490.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 25265501 is about 5026.4799810603. The cubic root of 25265501 is about 293.4332371771.

The spelling of 25265501 in words is "twenty-five million, two hundred sixty-five thousand, five hundred one".