1025540161631 has 2 divisors, whose sum is σ = 1025540161632. Its totient is φ = 1025540161630.

The previous prime is 1025540161609. The next prime is 1025540161703. The reversal of 1025540161631 is 1361610455201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1025540161631 - 2⁶ = 1025540161567 is a prime.

It is a super-2 number, since 2×1025540161631² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1025540161591 and 1025540161600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025540161831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512770080815 + 512770080816.

It is an arithmetic number, because the mean of its divisors is an integer number (512770080816).

Almost surely, 2^{1025540161631} is an apocalyptic number.

1025540161631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025540161631 is an equidigital number, since it uses as much as digits as its factorization.

1025540161631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 1025540161631 in words is "one trillion, twenty-five billion, five hundred forty million, one hundred sixty-one thousand, six hundred thirty-one".