172098825 has 24 divisors (see below), whose sum is σ = 293719296. Its totient is φ = 88824000.

The previous prime is 172098779. The next prime is 172098859. The reversal of 172098825 is 528890271.

It is not a de Polignac number, because 172098825 - 2⁷ = 172098697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34686 + ... + 39335.

It is an arithmetic number, because the mean of its divisors is an integer number (12238304).

Almost surely, 2^172098825 is an apocalyptic number.

172098825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172098825 is a deficient number, since it is larger than the sum of its proper divisors (121620471).

172098825 is a wasteful number, since it uses less digits than its factorization.

172098825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74065 (or 74060 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 172098825 is about 13118.6441753712. The cubic root of 172098825 is about 556.2362669673.

The spelling of 172098825 in words is "one hundred seventy-two million, ninety-eight thousand, eight hundred twenty-five".