26378225 has 12 divisors (see below), whose sum is σ = 33594204. Its totient is φ = 20531520.

The previous prime is 26378201. The next prime is 26378249. The reversal of 26378225 is 52287362.

It is an interprime number because it is at equal distance from previous prime (26378201) and next prime (26378249).

It can be written as a sum of positive squares in 6 ways, for example, as 2211169 + 24167056 = 1487^2 + 4916^2 .

It is not a de Polignac number, because 26378225 - 2⁶ = 26378161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13334 + ... + 15183.

It is an arithmetic number, because the mean of its divisors is an integer number (2799517).

Almost surely, 2^26378225 is an apocalyptic number.

26378225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26378225 is a deficient number, since it is larger than the sum of its proper divisors (7215979).

26378225 is a wasteful number, since it uses less digits than its factorization.

26378225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28564 (or 28559 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 26378225 is about 5135.9736175335. The cubic root of 26378225 is about 297.6792225652.

The spelling of 26378225 in words is "twenty-six million, three hundred seventy-eight thousand, two hundred twenty-five".