22725787 has 16 divisors (see below), whose sum is σ = 27628992. Its totient is φ = 18247680.

The previous prime is 22725757. The next prime is 22725803. The reversal of 22725787 is 78752722.

It is a cyclic number.

It is not a de Polignac number, because 22725787 - 2²³ = 14337179 is a prime.

It is a super-2 number, since 2×22725787² = 1032922789538738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22725757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41737 + ... + 42277.

It is an arithmetic number, because the mean of its divisors is an integer number (1726812).

Almost surely, 2^22725787 is an apocalyptic number.

22725787 is a deficient number, since it is larger than the sum of its proper divisors (4903205).

22725787 is a wasteful number, since it uses less digits than its factorization.

22725787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918.

The product of its digits is 109760, while the sum is 40.

The square root of 22725787 is about 4767.1571192903. The cubic root of 22725787 is about 283.2519949525.

The spelling of 22725787 in words is "twenty-two million, seven hundred twenty-five thousand, seven hundred eighty-seven".