25791407 has 2 divisors, whose sum is σ = 25791408. Its totient is φ = 25791406.

The previous prime is 25791401. The next prime is 25791421. The reversal of 25791407 is 70419752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25791407 - 2⁶ = 25791343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25791401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12895703 + 12895704.

It is an arithmetic number, because the mean of its divisors is an integer number (12895704).

Almost surely, 2^25791407 is an apocalyptic number.

25791407 is a deficient number, since it is larger than the sum of its proper divisors (1).

25791407 is an equidigital number, since it uses as much as digits as its factorization.

25791407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 25791407 is about 5078.5240966249. The cubic root of 25791407 is about 295.4552274454.

The spelling of 25791407 in words is "twenty-five million, seven hundred ninety-one thousand, four hundred seven".