26285450258 has 4 divisors (see below), whose sum is σ = 39428175390. Its totient is φ = 13142725128.

The previous prime is 26285450207. The next prime is 26285450267. The reversal of 26285450258 is 85205458262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85205458262 = 2 ⋅42602729131.

It can be written as a sum of positive squares in only one way, i.e., 17047741489 + 9237708769 = 130567^2 + 96113^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6571362563 + ... + 6571362566.

Almost surely, 2^26285450258 is an apocalyptic number.

26285450258 is a deficient number, since it is larger than the sum of its proper divisors (13142725132).

26285450258 is a wasteful number, since it uses less digits than its factorization.

26285450258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142725131.

The product of its (nonzero) digits is 1536000, while the sum is 47.

The spelling of 26285450258 in words is "twenty-six billion, two hundred eighty-five million, four hundred fifty thousand, two hundred fifty-eight".