13020172425 has 36 divisors (see below), whose sum is σ = 25114471564. Its totient is φ = 6409929600.

The previous prime is 13020172409. The next prime is 13020172439. The reversal of 13020172425 is 52427102031.

13020172425 is a `hidden beast` number, since 1 + 30 + 201 + 7 + 2 + 425 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 469675584 + 12550496841 = 21672^2 + 112029^2 .

It is not a de Polignac number, because 13020172425 - 2⁴ = 13020172409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2222746 + ... + 2228595.

Almost surely, 2^13020172425 is an apocalyptic number.

13020172425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13020172425 is a deficient number, since it is larger than the sum of its proper divisors (12094299139).

13020172425 is a wasteful number, since it uses less digits than its factorization.

13020172425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4451370 (or 4451362 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 13020172425 its reverse (52427102031), we get a palindrome (65447274456).

The spelling of 13020172425 in words is "thirteen billion, twenty million, one hundred seventy-two thousand, four hundred twenty-five".