25239061 has 2 divisors, whose sum is σ = 25239062. Its totient is φ = 25239060.

The previous prime is 25239037. The next prime is 25239107. The reversal of 25239061 is 16093252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14676561 + 10562500 = 3831^2 + 3250^2 .

It is a cyclic number.

It is not a de Polignac number, because 25239061 - 2⁵ = 25239029 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25239001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12619530 + 12619531.

It is an arithmetic number, because the mean of its divisors is an integer number (12619531).

Almost surely, 2^25239061 is an apocalyptic number.

It is an amenable number.

25239061 is a deficient number, since it is larger than the sum of its proper divisors (1).

25239061 is an equidigital number, since it uses as much as digits as its factorization.

25239061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 25239061 is about 5023.8492214636. The cubic root of 25239061 is about 293.3308434993.

It can be divided in two parts, 25 and 239061, that added together give a triangular number (239086 = T₆₉₁).

The spelling of 25239061 in words is "twenty-five million, two hundred thirty-nine thousand, sixty-one".