25165061 has 2 divisors, whose sum is σ = 25165062. Its totient is φ = 25165060.

The previous prime is 25165051. The next prime is 25165067. The reversal of 25165061 is 16056152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21104836 + 4060225 = 4594^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 25165061 - 2¹⁴ = 25148677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25165061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25165067) 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, 12582530 + 12582531.

It is an arithmetic number, because the mean of its divisors is an integer number (12582531).

Almost surely, 2^25165061 is an apocalyptic number.

It is an amenable number.

25165061 is a deficient number, since it is larger than the sum of its proper divisors (1).

25165061 is an equidigital number, since it uses as much as digits as its factorization.

25165061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 25165061 is about 5016.4789444390. The cubic root of 25165061 is about 293.0438844448.

The spelling of 25165061 in words is "twenty-five million, one hundred sixty-five thousand, sixty-one".