26615225 has 24 divisors (see below), whose sum is σ = 40622400. Its totient is φ = 16845120.

The previous prime is 26615221. The next prime is 26615227. The reversal of 26615225 is 52251662.

It is not a de Polignac number, because 26615225 - 2² = 26615221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26615221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3575 + ... + 8124.

It is an arithmetic number, because the mean of its divisors is an integer number (1692600).

Almost surely, 2^26615225 is an apocalyptic number.

26615225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26615225 is a deficient number, since it is larger than the sum of its proper divisors (14007175).

26615225 is a wasteful number, since it uses less digits than its factorization.

26615225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11729 (or 11724 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 26615225 is about 5158.9945725887. The cubic root of 26615225 is about 298.5680836668.

Adding to 26615225 its reverse (52251662), we get a palindrome (78866887).

The spelling of 26615225 in words is "twenty-six million, six hundred fifteen thousand, two hundred twenty-five".