30625481 has 2 divisors, whose sum is σ = 30625482. Its totient is φ = 30625480.

The previous prime is 30625459. The next prime is 30625493. The reversal of 30625481 is 18452603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30525625 + 99856 = 5525^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 30625481 - 2²² = 26431177 is a prime.

It is a super-2 number, since 2×30625481² = 1875840172962722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30625081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15312740 + 15312741.

It is an arithmetic number, because the mean of its divisors is an integer number (15312741).

Almost surely, 2^30625481 is an apocalyptic number.

It is an amenable number.

30625481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30625481 is an equidigital number, since it uses as much as digits as its factorization.

30625481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 30625481 is about 5534.0293638542. The cubic root of 30625481 is about 312.8678752470.

The spelling of 30625481 in words is "thirty million, six hundred twenty-five thousand, four hundred eighty-one".