25500355519157 has 2 divisors, whose sum is σ = 25500355519158. Its totient is φ = 25500355519156.

The previous prime is 25500355519141. The next prime is 25500355519267. The reversal of 25500355519157 is 75191555300552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25215924230116 + 284431289041 = 5021546^2 + 533321^2 .

It is a cyclic number.

It is not a de Polignac number, because 25500355519157 - 2⁴ = 25500355519141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25500355519099 and 25500355519108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25500355515157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12750177759578 + 12750177759579.

It is an arithmetic number, because the mean of its divisors is an integer number (12750177759579).

Almost surely, 2^{25500355519157} is an apocalyptic number.

It is an amenable number.

25500355519157 is a deficient number, since it is larger than the sum of its proper divisors (1).

25500355519157 is an equidigital number, since it uses as much as digits as its factorization.

25500355519157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5906250, while the sum is 53.

The spelling of 25500355519157 in words is "twenty-five trillion, five hundred billion, three hundred fifty-five million, five hundred nineteen thousand, one hundred fifty-seven".