225127987 has 4 divisors (see below), whose sum is σ = 257289136. Its totient is φ = 192966840.

The previous prime is 225127963. The next prime is 225127993. The reversal of 225127987 is 789721522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789721522 = 2 ⋅394860761.

It is a cyclic number.

It is not a de Polignac number, because 225127987 - 2¹¹ = 225125939 is a prime.

It is a super-2 number, since 2×225127987² = 101365221061344338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225127937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16080564 + ... + 16080577.

It is an arithmetic number, because the mean of its divisors is an integer number (64322284).

Almost surely, 2^225127987 is an apocalyptic number.

225127987 is a deficient number, since it is larger than the sum of its proper divisors (32161149).

225127987 is an equidigital number, since it uses as much as digits as its factorization.

225127987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32161148.

The product of its digits is 141120, while the sum is 43.

The square root of 225127987 is about 15004.2656268143. The cubic root of 225127987 is about 608.3355025548.

The spelling of 225127987 in words is "two hundred twenty-five million, one hundred twenty-seven thousand, nine hundred eighty-seven".