22487505 has 8 divisors (see below), whose sum is σ = 35980032. Its totient is φ = 11993328.

The previous prime is 22487501. The next prime is 22487513. The reversal of 22487505 is 50578422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22487505 - 2² = 22487501 is a prime.

It is a super-2 number, since 2×22487505² = 1011375762250050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22487501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749569 + ... + 749598.

It is an arithmetic number, because the mean of its divisors is an integer number (4497504).

Almost surely, 2^22487505 is an apocalyptic number.

It is an amenable number.

22487505 is a deficient number, since it is larger than the sum of its proper divisors (13492527).

22487505 is a wasteful number, since it uses less digits than its factorization.

22487505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499175.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 22487505 is about 4742.0992187005. The cubic root of 22487505 is about 282.2585401202.

The spelling of 22487505 in words is "twenty-two million, four hundred eighty-seven thousand, five hundred five".