25791497 has 2 divisors, whose sum is σ = 25791498. Its totient is φ = 25791496.

The previous prime is 25791463. The next prime is 25791523. The reversal of 25791497 is 79419752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22619536 + 3171961 = 4756^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 25791497 - 2⁶ = 25791433 is a prime.

It is not a weakly prime, because it can be changed into another prime (25791407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12895748 + 12895749.

It is an arithmetic number, because the mean of its divisors is an integer number (12895749).

Almost surely, 2^25791497 is an apocalyptic number.

It is an amenable number.

25791497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25791497 is an equidigital number, since it uses as much as digits as its factorization.

25791497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 25791497 is about 5078.5329574593. The cubic root of 25791497 is about 295.4555711121.

The spelling of 25791497 in words is "twenty-five million, seven hundred ninety-one thousand, four hundred ninety-seven".