25122315 has 8 divisors (see below), whose sum is σ = 40195728. Its totient is φ = 13398560.

The previous prime is 25122283. The next prime is 25122329. The reversal of 25122315 is 51322152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25122315 - 2⁵ = 25122283 is a prime.

It is a super-2 number, since 2×25122315² = 1262261421918450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25122291 and 25122300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837396 + ... + 837425.

It is an arithmetic number, because the mean of its divisors is an integer number (5024466).

Almost surely, 2^25122315 is an apocalyptic number.

25122315 is a deficient number, since it is larger than the sum of its proper divisors (15073413).

25122315 is a wasteful number, since it uses less digits than its factorization.

25122315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674829.

The product of its digits is 600, while the sum is 21.

The square root of 25122315 is about 5012.2165755282. The cubic root of 25122315 is about 292.8778665259.

Adding to 25122315 its reverse (51322152), we get a palindrome (76444467).

It can be divided in two parts, 251 and 22315, that multiplied together give a palindrome (5601065).

The spelling of 25122315 in words is "twenty-five million, one hundred twenty-two thousand, three hundred fifteen".