19422725 has 24 divisors (see below), whose sum is σ = 28206528. Its totient is φ = 12988800.

The previous prime is 19422719. The next prime is 19422757. The reversal of 19422725 is 52722491.

It is not a de Polignac number, because 19422725 - 2¹² = 19418629 is a prime.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 19422691 and 19422700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5822 + ... + 8528.

It is an arithmetic number, because the mean of its divisors is an integer number (1175272).

Almost surely, 2^19422725 is an apocalyptic number.

It is an amenable number.

19422725 is a deficient number, since it is larger than the sum of its proper divisors (8783803).

19422725 is a wasteful number, since it uses less digits than its factorization.

19422725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2760 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 19422725 is about 4407.1220768207. The cubic root of 19422725 is about 268.8046148245.

The spelling of 19422725 in words is "nineteen million, four hundred twenty-two thousand, seven hundred twenty-five".