25783669 has 2 divisors, whose sum is σ = 25783670. Its totient is φ = 25783668.

The previous prime is 25783651. The next prime is 25783687. The reversal of 25783669 is 96638752.

It is a balanced prime because it is at equal distance from previous prime (25783651) and next prime (25783687).

It can be written as a sum of positive squares in only one way, i.e., 21743569 + 4040100 = 4663^2 + 2010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25783669 is a prime.

It is a super-2 number, since 2×25783669² = 1329595174203122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25783609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12891834 + 12891835.

It is an arithmetic number, because the mean of its divisors is an integer number (12891835).

Almost surely, 2^25783669 is an apocalyptic number.

It is an amenable number.

25783669 is a deficient number, since it is larger than the sum of its proper divisors (1).

25783669 is an equidigital number, since it uses as much as digits as its factorization.

25783669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 25783669 is about 5077.7622039635. The cubic root of 25783669 is about 295.4256767605.

The spelling of 25783669 in words is "twenty-five million, seven hundred eighty-three thousand, six hundred sixty-nine".