25264953977 has 2 divisors, whose sum is σ = 25264953978. Its totient is φ = 25264953976.

The previous prime is 25264953913. The next prime is 25264953979. The reversal of 25264953977 is 77935946252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24853837801 + 411116176 = 157651^2 + 20276^2 .

It is a cyclic number.

It is not a de Polignac number, because 25264953977 - 2⁶ = 25264953913 is a prime.

Together with 25264953979, 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 (25264953979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12632476988 + 12632476989.

It is an arithmetic number, because the mean of its divisors is an integer number (12632476989).

Almost surely, 2^25264953977 is an apocalyptic number.

It is an amenable number.

25264953977 is a deficient number, since it is larger than the sum of its proper divisors (1).

25264953977 is an equidigital number, since it uses as much as digits as its factorization.

25264953977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28576800, while the sum is 59.

The spelling of 25264953977 in words is "twenty-five billion, two hundred sixty-four million, nine hundred fifty-three thousand, nine hundred seventy-seven".