30825397 has 4 divisors (see below), whose sum is σ = 30922956. Its totient is φ = 30727840.

The previous prime is 30825337. The next prime is 30825401. The reversal of 30825397 is 79352803.

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 454276 + 30371121 = 674^2 + 5511^2 .

It is a cyclic number.

It is not a de Polignac number, because 30825397 - 2¹⁹ = 30301109 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 (30825337) 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, 48304 + ... + 48937.

It is an arithmetic number, because the mean of its divisors is an integer number (7730739).

Almost surely, 2^30825397 is an apocalyptic number.

It is an amenable number.

30825397 is a deficient number, since it is larger than the sum of its proper divisors (97559).

30825397 is an equidigital number, since it uses as much as digits as its factorization.

30825397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97558.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 30825397 is about 5552.0624095916. The cubic root of 30825397 is about 313.5471754625.

The spelling of 30825397 in words is "thirty million, eight hundred twenty-five thousand, three hundred ninety-seven".