26401375 has 64 divisors (see below), whose sum is σ = 44448768. Its totient is φ = 15120000.

The previous prime is 26401369. The next prime is 26401381. The reversal of 26401375 is 57310462.

It is an interprime number because it is at equal distance from previous prime (26401369) and next prime (26401381).

It is not a de Polignac number, because 26401375 - 2⁵ = 26401343 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125020 + ... + 125230.

It is an arithmetic number, because the mean of its divisors is an integer number (694512).

Almost surely, 2^26401375 is an apocalyptic number.

26401375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26401375 is the 3250-th heptagonal number.

26401375 is a deficient number, since it is larger than the sum of its proper divisors (18047393).

26401375 is a wasteful number, since it uses less digits than its factorization.

26401375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 26401375 is about 5138.2268342299. The cubic root of 26401375 is about 297.7662799647.

The spelling of 26401375 in words is "twenty-six million, four hundred one thousand, three hundred seventy-five".