25465008977 has 2 divisors, whose sum is σ = 25465008978. Its totient is φ = 25465008976.

The previous prime is 25465008949. The next prime is 25465008979. The reversal of 25465008977 is 77980056452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15721147456 + 9743861521 = 125384^2 + 98711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25465008977 is a prime.

Together with 25465008979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25465008979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12732504488 + 12732504489.

It is an arithmetic number, because the mean of its divisors is an integer number (12732504489).

Almost surely, 2^25465008977 is an apocalyptic number.

It is an amenable number.

25465008977 is a deficient number, since it is larger than the sum of its proper divisors (1).

25465008977 is an equidigital number, since it uses as much as digits as its factorization.

25465008977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 25465008977 in words is "twenty-five billion, four hundred sixty-five million, eight thousand, nine hundred seventy-seven".