30195025 has 27 divisors (see below), whose sum is σ = 43833969. Its totient is φ = 20573280.

The previous prime is 30195013. The next prime is 30195029. The reversal of 30195025 is 52059103.

The square root of 30195025 is 5495.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3651921 + 26543104 = 1911^2 + 5152^2 .

It is not a de Polignac number, because 30195025 - 2¹⁵ = 30162257 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30195029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 192247 + ... + 192403.

Almost surely, 2^30195025 is an apocalyptic number.

30195025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30195025 is the 5495-th square number.

30195025 is the 2748-th centered octagonal number.

It is an amenable number.

30195025 is a deficient number, since it is larger than the sum of its proper divisors (13638944).

30195025 is an equidigital number, since it uses as much as digits as its factorization.

30195025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 25.

The cubic root of 30195025 is about 311.3951168167.

Multiplying 30195025 by its sum of digits (25), we get a square (754875625 = 27475²).

30195025 divided by its sum of digits (25) gives a square (1207801 = 1099²).

The spelling of 30195025 in words is "thirty million, one hundred ninety-five thousand, twenty-five".