25783590377 has 2 divisors, whose sum is σ = 25783590378. Its totient is φ = 25783590376.

The previous prime is 25783590307. The next prime is 25783590389. The reversal of 25783590377 is 77309538752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19056145936 + 6727444441 = 138044^2 + 82021^2 .

It is a cyclic number.

It is not a de Polignac number, because 25783590377 - 2¹² = 25783586281 is a prime.

It is not a weakly prime, because it can be changed into another prime (25783590307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12891795188 + 12891795189.

It is an arithmetic number, because the mean of its divisors is an integer number (12891795189).

Almost surely, 2^25783590377 is an apocalyptic number.

It is an amenable number.

25783590377 is a deficient number, since it is larger than the sum of its proper divisors (1).

25783590377 is an equidigital number, since it uses as much as digits as its factorization.

25783590377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11113200, while the sum is 56.

The spelling of 25783590377 in words is "twenty-five billion, seven hundred eighty-three million, five hundred ninety thousand, three hundred seventy-seven".