172515065025 has 96 divisors (see below), whose sum is σ = 296866554880. Its totient is φ = 88325406720.

The previous prime is 172515064979. The next prime is 172515065077. The reversal of 172515065025 is 520560515271.

It is not a de Polignac number, because 172515065025 - 2⁶ = 172515064961 is a prime.

It is a super-2 number, since 2×172515065025² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 110091792 + ... + 110093358.

Almost surely, 2^172515065025 is an apocalyptic number.

172515065025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172515065025 is a deficient number, since it is larger than the sum of its proper divisors (124351489855).

172515065025 is a wasteful number, since it uses less digits than its factorization.

172515065025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 172515065025 in words is "one hundred seventy-two billion, five hundred fifteen million, sixty-five thousand, twenty-five".