19315825 has 24 divisors (see below), whose sum is σ = 25926912. Its totient is φ = 14219520.

The previous prime is 19315823. The next prime is 19315847. The reversal of 19315825 is 52851391.

It is not a de Polignac number, because 19315825 - 2¹ = 19315823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19315823) 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 23 ways as a sum of consecutive naturals, for example, 19492 + ... + 20458.

It is an arithmetic number, because the mean of its divisors is an integer number (1080288).

Almost surely, 2^19315825 is an apocalyptic number.

It is an amenable number.

19315825 is a deficient number, since it is larger than the sum of its proper divisors (6611087).

19315825 is a wasteful number, since it uses less digits than its factorization.

19315825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1036 counting only the distinct ones).

The product of its digits is 10800, while the sum is 34.

The square root of 19315825 is about 4394.9772468125. The cubic root of 19315825 is about 268.3105527857.

It can be divided in two parts, 19 and 315825, that added together give a square (315844 = 562²).

The spelling of 19315825 in words is "nineteen million, three hundred fifteen thousand, eight hundred twenty-five".