26428625 has 16 divisors (see below), whose sum is σ = 34925904. Its totient is φ = 19897600.

The previous prime is 26428621. The next prime is 26428627. The reversal of 26428625 is 52682462.

It can be written as a sum of positive squares in 8 ways, for example, as 12418576 + 14010049 = 3524^2 + 3743^2 .

It is not a de Polignac number, because 26428625 - 2² = 26428621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26428621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4094 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (2182869).

Almost surely, 2^26428625 is an apocalyptic number.

26428625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26428625 is a deficient number, since it is larger than the sum of its proper divisors (8497279).

26428625 is a wasteful number, since it uses less digits than its factorization.

26428625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12469 (or 12459 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 26428625 is about 5140.8778433260. The cubic root of 26428625 is about 297.8686905536.

The spelling of 26428625 in words is "twenty-six million, four hundred twenty-eight thousand, six hundred twenty-five".