25601951 has 2 divisors, whose sum is σ = 25601952. Its totient is φ = 25601950.

The previous prime is 25601941. The next prime is 25601957. The reversal of 25601951 is 15910652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25601951 - 2²² = 21407647 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 (25601957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12800975 + 12800976.

It is an arithmetic number, because the mean of its divisors is an integer number (12800976).

Almost surely, 2^25601951 is an apocalyptic number.

25601951 is a deficient number, since it is larger than the sum of its proper divisors (1).

25601951 is an equidigital number, since it uses as much as digits as its factorization.

25601951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 25601951 is about 5059.8370527123. The cubic root of 25601951 is about 294.7300067276.

The spelling of 25601951 in words is "twenty-five million, six hundred one thousand, nine hundred fifty-one".