25283862081 has 9 divisors (see below), whose sum is σ = 36521823169. Its totient is φ = 16855590036.

The previous prime is 25283862049. The next prime is 25283862101. The reversal of 25283862081 is 18026838252.

The square root of 25283862081 is 159009.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 25283862081 - 2⁵ = 25283862049 is a prime.

It is a super-2 number, since 2×25283862081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25283862011) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 450526 + ... + 503528.

Almost surely, 2^25283862081 is an apocalyptic number.

25283862081 is the 159009-th square number.

25283862081 is the 79505-th centered octagonal number.

It is an amenable number.

25283862081 is a deficient number, since it is larger than the sum of its proper divisors (11237961088).

25283862081 is an frugal number, since it uses more digits than its factorization.

25283862081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106012 (or 53006 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

It can be divided in two parts, 25283 and 862081, that added together give a square (887364 = 942²).

The spelling of 25283862081 in words is "twenty-five billion, two hundred eighty-three million, eight hundred sixty-two thousand, eighty-one".