30761225 has 18 divisors (see below), whose sum is σ = 41930910. Its totient is φ = 22369600.

The previous prime is 30761201. The next prime is 30761231. The reversal of 30761225 is 52216703.

It can be written as a sum of positive squares in 3 ways, for example, as 7441984 + 23319241 = 2728^2 + 4829^2 .

It is not a de Polignac number, because 30761225 - 2⁶ = 30761161 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30761194 and 30761203.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 2060 + ... + 8109.

It is an arithmetic number, because the mean of its divisors is an integer number (2329495).

Almost surely, 2^30761225 is an apocalyptic number.

It is an amenable number.

30761225 is a deficient number, since it is larger than the sum of its proper divisors (11169685).

30761225 is a wasteful number, since it uses less digits than its factorization.

30761225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10201 (or 10185 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 30761225 is about 5546.2802850199. The cubic root of 30761225 is about 313.3294445219.

Adding to 30761225 its reverse (52216703), we get a palindrome (82977928).

The spelling of 30761225 in words is "thirty million, seven hundred sixty-one thousand, two hundred twenty-five".