25271951 has 2 divisors, whose sum is σ = 25271952. Its totient is φ = 25271950.

The previous prime is 25271941. The next prime is 25271971. The reversal of 25271951 is 15917252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25271951 - 2⁶ = 25271887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25271941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12635975 + 12635976.

It is an arithmetic number, because the mean of its divisors is an integer number (12635976).

Almost surely, 2^25271951 is an apocalyptic number.

25271951 is a deficient number, since it is larger than the sum of its proper divisors (1).

25271951 is an equidigital number, since it uses as much as digits as its factorization.

25271951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 32.

The square root of 25271951 is about 5027.1215421949. The cubic root of 25271951 is about 293.4582051278.

The spelling of 25271951 in words is "twenty-five million, two hundred seventy-one thousand, nine hundred fifty-one".