25066999 has 2 divisors, whose sum is σ = 25067000. Its totient is φ = 25066998.

The previous prime is 25066969. The next prime is 25067017. The reversal of 25066999 is 99966052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25066999 - 2¹¹ = 25064951 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25066919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12533499 + 12533500.

It is an arithmetic number, because the mean of its divisors is an integer number (12533500).

Almost surely, 2^25066999 is an apocalyptic number.

25066999 is a deficient number, since it is larger than the sum of its proper divisors (1).

25066999 is an equidigital number, since it uses as much as digits as its factorization.

25066999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 25066999 is about 5006.6954171389. The cubic root of 25066999 is about 292.6627491780.

It can be divided in two parts, 2 and 5066999, that added together give a square (5067001 = 2251²).

The spelling of 25066999 in words is "twenty-five million, sixty-six thousand, nine hundred ninety-nine".