25725751 has 2 divisors, whose sum is σ = 25725752. Its totient is φ = 25725750.

The previous prime is 25725673. The next prime is 25725761. The reversal of 25725751 is 15752752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25725751 - 2²¹ = 23628599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25725761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12862875 + 12862876.

It is an arithmetic number, because the mean of its divisors is an integer number (12862876).

Almost surely, 2^25725751 is an apocalyptic number.

25725751 is a deficient number, since it is larger than the sum of its proper divisors (1).

25725751 is an equidigital number, since it uses as much as digits as its factorization.

25725751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24500, while the sum is 34.

The square root of 25725751 is about 5072.0558948024. The cubic root of 25725751 is about 295.2043054713.

The spelling of 25725751 in words is "twenty-five million, seven hundred twenty-five thousand, seven hundred fifty-one".