25020215 has 16 divisors (see below), whose sum is σ = 33454080. Its totient is φ = 17807520.

The previous prime is 25020211. The next prime is 25020217. The reversal of 25020215 is 51202052.

It is not a de Polignac number, because 25020215 - 2² = 25020211 is a prime.

It is a super-2 number, since 2×25020215² = 1252022317292450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25020193 and 25020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25020211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2255 + ... + 7424.

It is an arithmetic number, because the mean of its divisors is an integer number (2090880).

Almost surely, 2^25020215 is an apocalyptic number.

25020215 is a deficient number, since it is larger than the sum of its proper divisors (8433865).

25020215 is a wasteful number, since it uses less digits than its factorization.

25020215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9742.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 25020215 is about 5002.0210915189. The cubic root of 25020215 is about 292.4805646131.

Adding to 25020215 its reverse (51202052), we get a palindrome (76222267).

The spelling of 25020215 in words is "twenty-five million, twenty thousand, two hundred fifteen".