26138425 has 24 divisors (see below), whose sum is σ = 34640640. Its totient is φ = 19521600.

The previous prime is 26138423. The next prime is 26138429. The reversal of 26138425 is 52483162.

It is not a de Polignac number, because 26138425 - 2¹ = 26138423 is a prime.

It is a super-2 number, since 2×26138425² = 1366434522961250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (26138423) 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, 21894 + ... + 23056.

It is an arithmetic number, because the mean of its divisors is an integer number (1443360).

Almost surely, 2^26138425 is an apocalyptic number.

26138425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26138425 is a deficient number, since it is larger than the sum of its proper divisors (8502215).

26138425 is a wasteful number, since it uses less digits than its factorization.

26138425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1228 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 26138425 is about 5112.5751828213. The cubic root of 26138425 is about 296.7744246567.

The spelling of 26138425 in words is "twenty-six million, one hundred thirty-eight thousand, four hundred twenty-five".