29925481 has 2 divisors, whose sum is σ = 29925482. Its totient is φ = 29925480.

The previous prime is 29925479. The next prime is 29925487. The reversal of 29925481 is 18452992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 549081 = 5420^2 + 741^2 .

It is a cyclic number.

It is not a de Polignac number, because 29925481 - 2¹ = 29925479 is a prime.

It is a super-2 number, since 2×29925481² = 1791068826162722, which contains 22 as substring.

Together with 29925479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (29925487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14962740 + 14962741.

It is an arithmetic number, because the mean of its divisors is an integer number (14962741).

Almost surely, 2^29925481 is an apocalyptic number.

It is an amenable number.

29925481 is a deficient number, since it is larger than the sum of its proper divisors (1).

29925481 is an equidigital number, since it uses as much as digits as its factorization.

29925481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 29925481 is about 5470.4187225477. The cubic root of 29925481 is about 310.4657618807.

The spelling of 29925481 in words is "twenty-nine million, nine hundred twenty-five thousand, four hundred eighty-one".