25651039 has 2 divisors, whose sum is σ = 25651040. Its totient is φ = 25651038.

The previous prime is 25651037. The next prime is 25651061. The reversal of 25651039 is 93015652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25651039 - 2¹ = 25651037 is a prime.

Together with 25651037, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25651039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25651037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825519 + 12825520.

It is an arithmetic number, because the mean of its divisors is an integer number (12825520).

Almost surely, 2^25651039 is an apocalyptic number.

25651039 is a deficient number, since it is larger than the sum of its proper divisors (1).

25651039 is an equidigital number, since it uses as much as digits as its factorization.

25651039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 25651039 is about 5064.6854788822. The cubic root of 25651039 is about 294.9182537071.

The spelling of 25651039 in words is "twenty-five million, six hundred fifty-one thousand, thirty-nine".