25700257423 has 2 divisors, whose sum is σ = 25700257424. Its totient is φ = 25700257422.

The previous prime is 25700257367. The next prime is 25700257463. The reversal of 25700257423 is 32475200752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25700257423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25700257463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12850128711 + 12850128712.

It is an arithmetic number, because the mean of its divisors is an integer number (12850128712).

Almost surely, 2^25700257423 is an apocalyptic number.

25700257423 is a deficient number, since it is larger than the sum of its proper divisors (1).

25700257423 is an equidigital number, since it uses as much as digits as its factorization.

25700257423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 37.

The spelling of 25700257423 in words is "twenty-five billion, seven hundred million, two hundred fifty-seven thousand, four hundred twenty-three".