25122115 has 8 divisors (see below), whose sum is σ = 30198960. Its totient is φ = 20062752.

The previous prime is 25122103. The next prime is 25122131. The reversal of 25122115 is 51122152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25122115 is a prime.

It is a super-2 number, since 2×25122115² = 1262241324146450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25122092 and 25122101.

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, 964 + ... + 7153.

It is an arithmetic number, because the mean of its divisors is an integer number (3774870).

Almost surely, 2^25122115 is an apocalyptic number.

25122115 is a deficient number, since it is larger than the sum of its proper divisors (5076845).

25122115 is an equidigital number, since it uses as much as digits as its factorization.

25122115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8741.

The product of its digits is 200, while the sum is 19.

The square root of 25122115 is about 5012.1966242357. The cubic root of 25122115 is about 292.8770893187.

Adding to 25122115 its reverse (51122152), we get a palindrome (76244267).

It can be divided in two parts, 251 and 22115, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 25122115 in words is "twenty-five million, one hundred twenty-two thousand, one hundred fifteen".