261525023 has 2 divisors, whose sum is σ = 261525024. Its totient is φ = 261525022.

The previous prime is 261525007. The next prime is 261525029. The reversal of 261525023 is 320525162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261525023 - 2⁴ = 261525007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261524983 and 261525001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261525029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130762511 + 130762512.

It is an arithmetic number, because the mean of its divisors is an integer number (130762512).

Almost surely, 2^261525023 is an apocalyptic number.

261525023 is a deficient number, since it is larger than the sum of its proper divisors (1).

261525023 is an equidigital number, since it uses as much as digits as its factorization.

261525023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 261525023 is about 16171.7353119571. The cubic root of 261525023 is about 639.4958782403.

The spelling of 261525023 in words is "two hundred sixty-one million, five hundred twenty-five thousand, twenty-three".