25457673523 has 2 divisors, whose sum is σ = 25457673524. Its totient is φ = 25457673522.

The previous prime is 25457673503. The next prime is 25457673541. The reversal of 25457673523 is 32537675452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25457673523 is a prime.

It is not a weakly prime, because it can be changed into another prime (25457673503) 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, 12728836761 + 12728836762.

It is an arithmetic number, because the mean of its divisors is an integer number (12728836762).

Almost surely, 2^25457673523 is an apocalyptic number.

25457673523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25457673523 is an equidigital number, since it uses as much as digits as its factorization.

25457673523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292000, while the sum is 49.

The spelling of 25457673523 in words is "twenty-five billion, four hundred fifty-seven million, six hundred seventy-three thousand, five hundred twenty-three".