25117493 has 2 divisors, whose sum is σ = 25117494. Its totient is φ = 25117492.

The previous prime is 25117489. The next prime is 25117507. The reversal of 25117493 is 39471152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16834609 + 8282884 = 4103^2 + 2878^2 .

It is a cyclic number.

It is not a de Polignac number, because 25117493 - 2² = 25117489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25117423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12558746 + 12558747.

It is an arithmetic number, because the mean of its divisors is an integer number (12558747).

Almost surely, 2^25117493 is an apocalyptic number.

It is an amenable number.

25117493 is a deficient number, since it is larger than the sum of its proper divisors (1).

25117493 is an equidigital number, since it uses as much as digits as its factorization.

25117493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 25117493 is about 5011.7355277389. The cubic root of 25117493 is about 292.8591269121.

The spelling of 25117493 in words is "twenty-five million, one hundred seventeen thousand, four hundred ninety-three".