25225215 has 32 divisors (see below), whose sum is σ = 42232320. Its totient is φ = 12840576.

The previous prime is 25225201. The next prime is 25225237. The reversal of 25225215 is 51252252.

It is not a de Polignac number, because 25225215 - 2⁷ = 25225087 is a prime.

It is a super-2 number, since 2×25225215² = 1272622943592450, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 44524 + ... + 45086.

It is an arithmetic number, because the mean of its divisors is an integer number (1319760).

Almost surely, 2^25225215 is an apocalyptic number.

25225215 is a deficient number, since it is larger than the sum of its proper divisors (17007105).

25225215 is a wasteful number, since it uses less digits than its factorization.

25225215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 2000, while the sum is 24.

The square root of 25225215 is about 5022.4710053917. The cubic root of 25225215 is about 293.2771938306.

Adding to 25225215 its reverse (51252252), we get a palindrome (76477467).

The spelling of 25225215 in words is "twenty-five million, two hundred twenty-five thousand, two hundred fifteen".