25281849229 has 24 divisors (see below), whose sum is σ = 32050251072. Its totient is φ = 19515300480.

The previous prime is 25281849223. The next prime is 25281849247. The reversal of 25281849229 is 92294818252.

It is not a de Polignac number, because 25281849229 - 2²¹ = 25279752077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25281849223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212119 + ... + 309124.

It is an arithmetic number, because the mean of its divisors is an integer number (1335427128).

Almost surely, 2^25281849229 is an apocalyptic number.

It is an amenable number.

25281849229 is a deficient number, since it is larger than the sum of its proper divisors (6768401843).

25281849229 is a wasteful number, since it uses less digits than its factorization.

25281849229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521317 (or 521304 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The spelling of 25281849229 in words is "twenty-five billion, two hundred eighty-one million, eight hundred forty-nine thousand, two hundred twenty-nine".