25356477317123 has 2 divisors, whose sum is σ = 25356477317124. Its totient is φ = 25356477317122.

The previous prime is 25356477317089. The next prime is 25356477317153. The reversal of 25356477317123 is 32171377465352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25356477317123 - 2²² = 25356473122819 is a prime.

It is not a weakly prime, because it can be changed into another prime (25356477317153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12678238658561 + 12678238658562.

It is an arithmetic number, because the mean of its divisors is an integer number (12678238658562).

Almost surely, 2^{25356477317123} is an apocalyptic number.

25356477317123 is a deficient number, since it is larger than the sum of its proper divisors (1).

25356477317123 is an equidigital number, since it uses as much as digits as its factorization.

25356477317123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22226400, while the sum is 56.

The spelling of 25356477317123 in words is "twenty-five trillion, three hundred fifty-six billion, four hundred seventy-seven million, three hundred seventeen thousand, one hundred twenty-three".