19122725 has 12 divisors (see below), whose sum is σ = 23897280. Its totient is φ = 15178800.

The previous prime is 19122709. The next prime is 19122731. The reversal of 19122725 is 52722191.

It is not a de Polignac number, because 19122725 - 2⁴ = 19122709 is a prime.

It is a super-2 number, since 2×19122725² = 731357222851250, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356 + ... + 6194.

It is an arithmetic number, because the mean of its divisors is an integer number (1991440).

Almost surely, 2^19122725 is an apocalyptic number.

It is an amenable number.

19122725 is a deficient number, since it is larger than the sum of its proper divisors (4774555).

19122725 is a wasteful number, since it uses less digits than its factorization.

19122725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980 (or 5975 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 19122725 is about 4372.9538072109. The cubic root of 19122725 is about 267.4134578987.

The spelling of 19122725 in words is "nineteen million, one hundred twenty-two thousand, seven hundred twenty-five".