25740030977 has 2 divisors, whose sum is σ = 25740030978. Its totient is φ = 25740030976.

The previous prime is 25740030961. The next prime is 25740030991. The reversal of 25740030977 is 77903004752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22154536336 + 3585494641 = 148844^2 + 59879^2 .

It is a cyclic number.

It is not a de Polignac number, because 25740030977 - 2⁴ = 25740030961 is a prime.

It is not a weakly prime, because it can be changed into another prime (25740030997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12870015488 + 12870015489.

It is an arithmetic number, because the mean of its divisors is an integer number (12870015489).

Almost surely, 2^25740030977 is an apocalyptic number.

It is an amenable number.

25740030977 is a deficient number, since it is larger than the sum of its proper divisors (1).

25740030977 is an equidigital number, since it uses as much as digits as its factorization.

25740030977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370440, while the sum is 44.

The spelling of 25740030977 in words is "twenty-five billion, seven hundred forty million, thirty thousand, nine hundred seventy-seven".