30525505 has 4 divisors (see below), whose sum is σ = 36630612. Its totient is φ = 24420400.

The previous prime is 30525503. The next prime is 30525511. The reversal of 30525505 is 50552503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16507969 + 14017536 = 4063^2 + 3744^2 .

It is not a de Polignac number, because 30525505 - 2¹ = 30525503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30525505.

It is not an unprimeable number, because it can be changed into a prime (30525503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3052546 + ... + 3052555.

It is an arithmetic number, because the mean of its divisors is an integer number (9157653).

Almost surely, 2^30525505 is an apocalyptic number.

It is an amenable number.

30525505 is a deficient number, since it is larger than the sum of its proper divisors (6105107).

30525505 is an equidigital number, since it uses as much as digits as its factorization.

30525505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105106.

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 30525505 is about 5524.9891402608. The cubic root of 30525505 is about 312.5270547243.

The spelling of 30525505 in words is "thirty million, five hundred twenty-five thousand, five hundred five".