281621677325 has 12 divisors (see below), whose sum is σ = 349579664160. Its totient is φ = 225059416560.

The previous prime is 281621677303. The next prime is 281621677369. The reversal of 281621677325 is 523776126182.

It is not a de Polignac number, because 281621677325 - 2⁶ = 281621677261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5923985 + ... + 5971334.

It is an arithmetic number, because the mean of its divisors is an integer number (29131638680).

Almost surely, 2^281621677325 is an apocalyptic number.

281621677325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

281621677325 is a deficient number, since it is larger than the sum of its proper divisors (67957986835).

281621677325 is a wasteful number, since it uses less digits than its factorization.

281621677325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11896276 (or 11896271 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The spelling of 281621677325 in words is "two hundred eighty-one billion, six hundred twenty-one million, six hundred seventy-seven thousand, three hundred twenty-five".