172866847425 has 12 divisors (see below), whose sum is σ = 285806521200. Its totient is φ = 92195651920.

The previous prime is 172866847403. The next prime is 172866847459. The reversal of 172866847425 is 524748668271.

It is not a de Polignac number, because 172866847425 - 2⁷ = 172866847297 is a prime.

It is a super-3 number, since 3×172866847425³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1152445575 + ... + 1152445724.

It is an arithmetic number, because the mean of its divisors is an integer number (23817210100).

Almost surely, 2^172866847425 is an apocalyptic number.

172866847425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172866847425 is a deficient number, since it is larger than the sum of its proper divisors (112939673775).

172866847425 is a wasteful number, since it uses less digits than its factorization.

172866847425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304891312 (or 2304891307 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 60.

The spelling of 172866847425 in words is "one hundred seventy-two billion, eight hundred sixty-six million, eight hundred forty-seven thousand, four hundred twenty-five".