25093411281 has 21 divisors (see below), whose sum is σ = 37629319801. Its totient is φ = 16726089492.

The previous prime is 25093411271. The next prime is 25093411297. The reversal of 25093411281 is 18211439052.

The square root of 25093411281 is 158409.

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

25093411281 is a `hidden beast` number, since 2 + 509 + 34 + 112 + 8 + 1 = 666.

It is not a de Polignac number, because 25093411281 - 2¹¹ = 25093409233 is a prime.

It is a super-2 number, since 2×25093411281² (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 (25093411241) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 4274110 + ... + 4279976.

Almost surely, 2^25093411281 is an apocalyptic number.

25093411281 is the 158409-th square number.

25093411281 is the 79205-th centered octagonal number.

It is an amenable number.

25093411281 is a deficient number, since it is larger than the sum of its proper divisors (12535908520).

25093411281 is an frugal number, since it uses more digits than its factorization.

25093411281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11752 (or 5870 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

Multiplying 25093411281 by its sum of digits (36), we get a square (903362806116 = 950454²).

The spelling of 25093411281 in words is "twenty-five billion, ninety-three million, four hundred eleven thousand, two hundred eighty-one".