26401262525 has 24 divisors (see below), whose sum is σ = 35723674848. Its totient is φ = 19195560000.

The previous prime is 26401262491. The next prime is 26401262533. The reversal of 26401262525 is 52526210462.

It is not a de Polignac number, because 26401262525 - 2⁸ = 26401262269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1160510 + ... + 1183040.

It is an arithmetic number, because the mean of its divisors is an integer number (1488486452).

Almost surely, 2^26401262525 is an apocalyptic number.

26401262525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26401262525 is a deficient number, since it is larger than the sum of its proper divisors (9322412323).

26401262525 is a wasteful number, since it uses less digits than its factorization.

26401262525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26813 (or 26808 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 26401262525 its reverse (52526210462), we get a palindrome (78927472987).

The spelling of 26401262525 in words is "twenty-six billion, four hundred one million, two hundred sixty-two thousand, five hundred twenty-five".