25906057 has 2 divisors, whose sum is σ = 25906058. Its totient is φ = 25906056.

The previous prime is 25906007. The next prime is 25906061. The reversal of 25906057 is 75060952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19971961 + 5934096 = 4469^2 + 2436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25906057 is a prime.

It is a super-2 number, since 2×25906057² = 1342247578574498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25906007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12953028 + 12953029.

It is an arithmetic number, because the mean of its divisors is an integer number (12953029).

Almost surely, 2^25906057 is an apocalyptic number.

It is an amenable number.

25906057 is a deficient number, since it is larger than the sum of its proper divisors (1).

25906057 is an equidigital number, since it uses as much as digits as its factorization.

25906057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 25906057 is about 5089.7993084207. The cubic root of 25906057 is about 295.8923739774.

The spelling of 25906057 in words is "twenty-five million, nine hundred six thousand, fifty-seven".