25216775 has 12 divisors (see below), whose sum is σ = 31438464. Its totient is φ = 20064000.

The previous prime is 25216753. The next prime is 25216783. The reversal of 25216775 is 57761252.

It is a happy number.

It is not a de Polignac number, because 25216775 - 2¹² = 25212679 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2135 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (2619872).

Almost surely, 2^25216775 is an apocalyptic number.

25216775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25216775 is a deficient number, since it is larger than the sum of its proper divisors (6221689).

25216775 is a wasteful number, since it uses less digits than its factorization.

25216775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5482 (or 5477 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 25216775 is about 5021.6307112332. The cubic root of 25216775 is about 293.2444813822.

The spelling of 25216775 in words is "twenty-five million, two hundred sixteen thousand, seven hundred seventy-five".