25734739 has 2 divisors, whose sum is σ = 25734740. Its totient is φ = 25734738.

The previous prime is 25734707. The next prime is 25734749. The reversal of 25734739 is 93743752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25734739 - 2⁵ = 25734707 is a prime.

It is not a weakly prime, because it can be changed into another prime (25734749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12867369 + 12867370.

It is an arithmetic number, because the mean of its divisors is an integer number (12867370).

Almost surely, 2^25734739 is an apocalyptic number.

25734739 is a deficient number, since it is larger than the sum of its proper divisors (1).

25734739 is an equidigital number, since it uses as much as digits as its factorization.

25734739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 40.

The square root of 25734739 is about 5072.9418486712. The cubic root of 25734739 is about 295.2386807212.

The spelling of 25734739 in words is "twenty-five million, seven hundred thirty-four thousand, seven hundred thirty-nine".