25264739 has 2 divisors, whose sum is σ = 25264740. Its totient is φ = 25264738.

The previous prime is 25264691. The next prime is 25264751. The reversal of 25264739 is 93746252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25264739 is a prime.

It is not a weakly prime, because it can be changed into another prime (25266739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12632369 + 12632370.

It is an arithmetic number, because the mean of its divisors is an integer number (12632370).

Almost surely, 2^25264739 is an apocalyptic number.

25264739 is a deficient number, since it is larger than the sum of its proper divisors (1).

25264739 is an equidigital number, since it uses as much as digits as its factorization.

25264739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 25264739 is about 5026.4041819177. The cubic root of 25264739 is about 293.4302871944.

The spelling of 25264739 in words is "twenty-five million, two hundred sixty-four thousand, seven hundred thirty-nine".