30742025 has 12 divisors (see below), whose sum is σ = 38201052. Its totient is φ = 24541440.

The previous prime is 30742021. The next prime is 30742027. The reversal of 30742025 is 52024703.

It can be written as a sum of positive squares in 6 ways, for example, as 3200521 + 27541504 = 1789^2 + 5248^2 .

It is not a de Polignac number, because 30742025 - 2² = 30742021 is a prime.

It is a super-2 number, since 2×30742025² = 1890144202201250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30742021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14429 + ... + 16421.

It is an arithmetic number, because the mean of its divisors is an integer number (3183421).

Almost surely, 2^30742025 is an apocalyptic number.

It is an amenable number.

30742025 is a deficient number, since it is larger than the sum of its proper divisors (7459027).

30742025 is a wasteful number, since it uses less digits than its factorization.

30742025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620 (or 2615 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 30742025 is about 5544.5491250416. The cubic root of 30742025 is about 313.2642414683.

Adding to 30742025 its reverse (52024703), we get a palindrome (82766728).

The spelling of 30742025 in words is "thirty million, seven hundred forty-two thousand, twenty-five".