22740625 has 24 divisors (see below), whose sum is σ = 29998080. Its totient is φ = 17190000.

The previous prime is 22740623. The next prime is 22740637. The reversal of 22740625 is 52604722.

It is not a de Polignac number, because 22740625 - 2¹ = 22740623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22740593 and 22740602.

It is not an unprimeable number, because it can be changed into a prime (22740623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59184 + ... + 59566.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920).

Almost surely, 2^22740625 is an apocalyptic number.

22740625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22740625 is a deficient number, since it is larger than the sum of its proper divisors (7257455).

22740625 is an frugal number, since it uses more digits than its factorization.

22740625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 22740625 is about 4768.7131387828. The cubic root of 22740625 is about 283.3136280029.

The spelling of 22740625 in words is "twenty-two million, seven hundred forty thousand, six hundred twenty-five".