13552020025 has 6 divisors (see below), whose sum is σ = 16804504862.
Its totient is φ = 10841616000.
The previous prime is 13552020019. The next prime is 13552020029. The reversal of 13552020025 is 52002025531.
Adding to 13552020025 its reverse (52002025531), we get a palindrome (65554045556).
It is a happy number.
It can be written as a sum of positive squares in 3 ways, for example, as 3231695104 + 10320324921 = 56848^2 + 101589^2
It is not a de Polignac number, because 13552020025 - 23 = 13552020017 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 542080801 = 13552020025 / (1 + 3 + 5 + 5 + 2 + 0 + 2 + 0 + 0 + 2 + 5).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (13552020029) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 271040376 + ... + 271040425.
Almost surely, 213552020025 is an apocalyptic number.
It is an amenable number.
13552020025 is a deficient number, since it is larger than the sum of its proper divisors (3252484837).
13552020025 is an equidigital number, since it uses as much as digits as its factorization.
13552020025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 542080811 (or 542080806 counting only the distinct ones).
The product of its (nonzero) digits is 3000, while the sum is 25.
The spelling of 13552020025 in words is "thirteen billion, five hundred fifty-two million, twenty thousand, twenty-five".