19472505 has 16 divisors (see below), whose sum is σ = 33552960. Its totient is φ = 9586368.

The previous prime is 19472503. The next prime is 19472521. The reversal of 19472505 is 50527491.

It is not a de Polignac number, because 19472505 - 2¹ = 19472503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19472503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49735 + ... + 50124.

It is an arithmetic number, because the mean of its divisors is an integer number (2097060).

Almost surely, 2^19472505 is an apocalyptic number.

19472505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19472505 is a deficient number, since it is larger than the sum of its proper divisors (14080455).

19472505 is a wasteful number, since it uses less digits than its factorization.

19472505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99880.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 19472505 is about 4412.7661392827. The cubic root of 19472505 is about 269.0340656038.

Adding to 19472505 its reverse (50527491), we get a palindrome (69999996).

The spelling of 19472505 in words is "nineteen million, four hundred seventy-two thousand, five hundred five".