2523757435861 has 2 divisors, whose sum is σ = 2523757435862. Its totient is φ = 2523757435860.

The previous prime is 2523757435819. The next prime is 2523757435897. The reversal of 2523757435861 is 1685347573252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2517953281636 + 5804154225 = 1586806^2 + 76185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2523757435861 - 2⁹ = 2523757435349 is a prime.

It is a super-2 number, since 2×2523757435861² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2523757435796 and 2523757435805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2523757435261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261878717930 + 1261878717931.

It is an arithmetic number, because the mean of its divisors is an integer number (1261878717931).

Almost surely, 2^{2523757435861} is an apocalyptic number.

It is an amenable number.

2523757435861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523757435861 is an equidigital number, since it uses as much as digits as its factorization.

2523757435861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336000, while the sum is 58.

The spelling of 2523757435861 in words is "two trillion, five hundred twenty-three billion, seven hundred fifty-seven million, four hundred thirty-five thousand, eight hundred sixty-one".