25520275 has 12 divisors (see below), whose sum is σ = 34522344. Its totient is φ = 18560000.

The previous prime is 25520267. The next prime is 25520291. The reversal of 25520275 is 57202552.

It is not a de Polignac number, because 25520275 - 2³ = 25520267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 46126 + ... + 46675.

It is an arithmetic number, because the mean of its divisors is an integer number (2876862).

Almost surely, 2^25520275 is an apocalyptic number.

25520275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25520275 is a deficient number, since it is larger than the sum of its proper divisors (9002069).

25520275 is a wasteful number, since it uses less digits than its factorization.

25520275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92822 (or 92817 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 25520275 is about 5051.7595944384. The cubic root of 25520275 is about 294.4162544376.

The spelling of 25520275 in words is "twenty-five million, five hundred twenty thousand, two hundred seventy-five".