25575929 has 2 divisors, whose sum is σ = 25575930. Its totient is φ = 25575928.

The previous prime is 25575911. The next prime is 25575937. The reversal of 25575929 is 92957552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25452025 + 123904 = 5045^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 25575929 - 2⁸ = 25575673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25575929.

It is not a weakly prime, because it can be changed into another prime (25575959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12787964 + 12787965.

It is an arithmetic number, because the mean of its divisors is an integer number (12787965).

Almost surely, 2^25575929 is an apocalyptic number.

It is an amenable number.

25575929 is a deficient number, since it is larger than the sum of its proper divisors (1).

25575929 is an equidigital number, since it uses as much as digits as its factorization.

25575929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 44.

The square root of 25575929 is about 5057.2649722948. The cubic root of 25575929 is about 294.6301176718.

The spelling of 25575929 in words is "twenty-five million, five hundred seventy-five thousand, nine hundred twenty-nine".