19148214825 has 18 divisors (see below), whose sum is σ = 34296580734. Its totient is φ = 10212381120.

The previous prime is 19148214797. The next prime is 19148214829. The reversal of 19148214825 is 52841284191.

19148214825 is a `hidden beast` number, since 1 + 9 + 1 + 482 + 148 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 460231209 + 18687983616 = 21453^2 + 136704^2 .

It is not a de Polignac number, because 19148214825 - 2⁷ = 19148214697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (19148214829) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 42551364 + ... + 42551813.

Almost surely, 2^19148214825 is an apocalyptic number.

19148214825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19148214825 is a deficient number, since it is larger than the sum of its proper divisors (15148365909).

19148214825 is a wasteful number, since it uses less digits than its factorization.

19148214825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85103193 (or 85103185 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The spelling of 19148214825 in words is "nineteen billion, one hundred forty-eight million, two hundred fourteen thousand, eight hundred twenty-five".