26720225 has 24 divisors (see below), whose sum is σ = 38122560. Its totient is φ = 18198720.

The previous prime is 26720219. The next prime is 26720231. The reversal of 26720225 is 52202762.

It is an interprime number because it is at equal distance from previous prime (26720219) and next prime (26720231).

It is not a de Polignac number, because 26720225 - 2¹⁴ = 26703841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26720194 and 26720203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30899 + ... + 31751.

It is an arithmetic number, because the mean of its divisors is an integer number (1588440).

Almost surely, 2^26720225 is an apocalyptic number.

26720225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26720225 is a deficient number, since it is larger than the sum of its proper divisors (11402335).

26720225 is a wasteful number, since it uses less digits than its factorization.

26720225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 26720225 is about 5169.1609570606. The cubic root of 26720225 is about 298.9601964890.

Adding to 26720225 its reverse (52202762), we get a palindrome (78922987).

The spelling of 26720225 in words is "twenty-six million, seven hundred twenty thousand, two hundred twenty-five".