26520425 has 12 divisors (see below), whose sum is σ = 34820316. Its totient is φ = 19968000.

The previous prime is 26520419. The next prime is 26520433. The reversal of 26520425 is 52402562.

26520425 = 1241² + 1242² + ... + 1257².

It can be written as a sum of positive squares in 6 ways, for example, as 2598544 + 23921881 = 1612^2 + 4891^2 .

It is not a de Polignac number, because 26520425 - 2¹⁴ = 26504041 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26520394 and 26520403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30776 + ... + 31625.

It is an arithmetic number, because the mean of its divisors is an integer number (2901693).

Almost surely, 2^26520425 is an apocalyptic number.

26520425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26520425 is a deficient number, since it is larger than the sum of its proper divisors (8299891).

26520425 is a wasteful number, since it uses less digits than its factorization.

26520425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62428 (or 62423 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 26520425 is about 5149.7985397489. The cubic root of 26520425 is about 298.2131749462.

Adding to 26520425 its reverse (52402562), we get a palindrome (78922987).

The spelling of 26520425 in words is "twenty-six million, five hundred twenty thousand, four hundred twenty-five".