26890625 has 14 divisors (see below), whose sum is σ = 33632382. Its totient is φ = 21500000.

The previous prime is 26890621. The next prime is 26890637. The reversal of 26890625 is 52609862.

It can be written as a sum of positive squares in 7 ways, for example, as 26666896 + 223729 = 5164^2 + 473^2 .

It is not a de Polignac number, because 26890625 - 2² = 26890621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26890621) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 14765 + ... + 16485.

It is an arithmetic number, because the mean of its divisors is an integer number (2402313).

Almost surely, 2^26890625 is an apocalyptic number.

26890625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26890625 is a deficient number, since it is larger than the sum of its proper divisors (6741757).

26890625 is an frugal number, since it uses more digits than its factorization.

26890625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 26890625 is about 5185.6171281729. The cubic root of 26890625 is about 299.5943591730.

The spelling of 26890625 in words is "twenty-six million, eight hundred ninety thousand, six hundred twenty-five".