172252525 has 6 divisors (see below), whose sum is σ = 213593162. Its totient is φ = 137802000.

The previous prime is 172252477. The next prime is 172252529. The reversal of 172252525 is 525252271.

172252525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3200521 + 169052004 = 1789^2 + 13002^2 .

It is not a de Polignac number, because 172252525 - 2⁷ = 172252397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172252529) 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, 3445026 + ... + 3445075.

Almost surely, 2^172252525 is an apocalyptic number.

It is an amenable number.

172252525 is a deficient number, since it is larger than the sum of its proper divisors (41340637).

172252525 is an equidigital number, since it uses as much as digits as its factorization.

172252525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890111 (or 6890106 counting only the distinct ones).

The product of its digits is 14000, while the sum is 31.

The square root of 172252525 is about 13124.5009428930. The cubic root of 172252525 is about 556.4018076591.

The spelling of 172252525 in words is "one hundred seventy-two million, two hundred fifty-two thousand, five hundred twenty-five".