22101625 has 64 divisors (see below), whose sum is σ = 35642880. Its totient is φ = 13305600.

The previous prime is 22101623. The next prime is 22101631. The reversal of 22101625 is 52610122.

It is not a de Polignac number, because 22101625 - 2¹ = 22101623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22101623) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 329842 + ... + 329908.

It is an arithmetic number, because the mean of its divisors is an integer number (556920).

Almost surely, 2^22101625 is an apocalyptic number.

22101625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22101625 is a deficient number, since it is larger than the sum of its proper divisors (13541255).

22101625 is a wasteful number, since it uses less digits than its factorization.

22101625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 22101625 is about 4701.2365394649. The cubic root of 22101625 is about 280.6347208039.

Adding to 22101625 its reverse (52610122), we get a palindrome (74711747).

The spelling of 22101625 in words is "twenty-two million, one hundred one thousand, six hundred twenty-five".