26525150221 has 4 divisors (see below), whose sum is σ = 26539283772. Its totient is φ = 26511016672.

The previous prime is 26525150207. The next prime is 26525150233. The reversal of 26525150221 is 12205152562.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8475227721 + 18049922500 = 92061^2 + 134350^2 .

It is a cyclic number.

It is not a de Polignac number, because 26525150221 - 2²³ = 26516761613 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 (26525150291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7063960 + ... + 7067713.

It is an arithmetic number, because the mean of its divisors is an integer number (6634820943).

Almost surely, 2^26525150221 is an apocalyptic number.

It is an amenable number.

26525150221 is a deficient number, since it is larger than the sum of its proper divisors (14133551).

26525150221 is a wasteful number, since it uses less digits than its factorization.

26525150221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14133550.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 26525150221 in words is "twenty-six billion, five hundred twenty-five million, one hundred fifty thousand, two hundred twenty-one".