2172453215025 has 48 divisors (see below), whose sum is σ = 3626662932288. Its totient is φ = 1147399968000.

The previous prime is 2172453215003. The next prime is 2172453215027. The reversal of 2172453215025 is 5205123542712.

It is a happy number.

It is not a de Polignac number, because 2172453215025 - 2²⁷ = 2172318997297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2172453215027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22912215 + ... + 23006835.

It is an arithmetic number, because the mean of its divisors is an integer number (75555477756).

Almost surely, 2^{2172453215025} is an apocalyptic number.

2172453215025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2172453215025 is a deficient number, since it is larger than the sum of its proper divisors (1454209717263).

2172453215025 is a wasteful number, since it uses less digits than its factorization.

2172453215025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97602 (or 97597 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 39.

Adding to 2172453215025 its reverse (5205123542712), we get a palindrome (7377576757737).

The spelling of 2172453215025 in words is "two trillion, one hundred seventy-two billion, four hundred fifty-three million, two hundred fifteen thousand, twenty-five".