25266601 has 2 divisors, whose sum is σ = 25266602. Its totient is φ = 25266600.

The previous prime is 25266587. The next prime is 25266613. The reversal of 25266601 is 10666252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 2178576 = 4805^2 + 1476^2 .

It is a cyclic number.

It is not a de Polignac number, because 25266601 - 2¹⁷ = 25135529 is a prime.

It is a super-2 number, since 2×25266601² = 1276802252186402, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25266601.

It is not a weakly prime, because it can be changed into another prime (25246601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12633300 + 12633301.

It is an arithmetic number, because the mean of its divisors is an integer number (12633301).

Almost surely, 2^25266601 is an apocalyptic number.

It is an amenable number.

25266601 is a deficient number, since it is larger than the sum of its proper divisors (1).

25266601 is an equidigital number, since it uses as much as digits as its factorization.

25266601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25266601 is about 5026.5894003787. The cubic root of 25266601 is about 293.4374955778.

The spelling of 25266601 in words is "twenty-five million, two hundred sixty-six thousand, six hundred one".