26252263661 has 8 divisors (see below), whose sum is σ = 28461413400. Its totient is φ = 24070220352.

The previous prime is 26252263657. The next prime is 26252263679. The reversal of 26252263661 is 16636225262.

It can be written as a sum of positive squares in 4 ways, for example, as 1576566436 + 24675697225 = 39706^2 + 157085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26252263661 - 2² = 26252263657 is a prime.

It is a super-2 number, since 2×26252263661² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26252269661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6774590 + ... + 6778463.

It is an arithmetic number, because the mean of its divisors is an integer number (3557676675).

Almost surely, 2^26252263661 is an apocalyptic number.

It is an amenable number.

26252263661 is a deficient number, since it is larger than the sum of its proper divisors (2209149739).

26252263661 is a wasteful number, since it uses less digits than its factorization.

26252263661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13553215.

The product of its digits is 311040, while the sum is 41.

The spelling of 26252263661 in words is "twenty-six billion, two hundred fifty-two million, two hundred sixty-three thousand, six hundred sixty-one".