281625652 has 24 divisors (see below), whose sum is σ = 614456640. Its totient is φ = 109724160.

The previous prime is 281625649. The next prime is 281625661. The reversal of 281625652 is 256526182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456877 + ... + 457492.

It is an arithmetic number, because the mean of its divisors is an integer number (25602360).

Almost surely, 2^281625652 is an apocalyptic number.

281625652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

281625652 is an abundant number, since it is smaller than the sum of its proper divisors (332830988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281625652 is a wasteful number, since it uses less digits than its factorization.

281625652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914391 (or 914389 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 281625652 is about 16781.7058727651. The cubic root of 281625652 is about 655.4769185554.

The spelling of 281625652 in words is "two hundred eighty-one million, six hundred twenty-five thousand, six hundred fifty-two".