25275559 has 4 divisors (see below), whose sum is σ = 26147160. Its totient is φ = 24403960.

The previous prime is 25275539. The next prime is 25275563. The reversal of 25275559 is 95557252.

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

It is a cyclic number.

It is not a de Polignac number, because 25275559 - 2⁵ = 25275527 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25275539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435757 + ... + 435814.

It is an arithmetic number, because the mean of its divisors is an integer number (6536790).

Almost surely, 2^25275559 is an apocalyptic number.

25275559 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

25275559 is a deficient number, since it is larger than the sum of its proper divisors (871601).

25275559 is an equidigital number, since it uses as much as digits as its factorization.

25275559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871600.

The product of its digits is 157500, while the sum is 40.

The square root of 25275559 is about 5027.4803828558. The cubic root of 25275559 is about 293.4721698433.

The spelling of 25275559 in words is "twenty-five million, two hundred seventy-five thousand, five hundred fifty-nine".