25507066 has 16 divisors (see below), whose sum is σ = 42625800. Its totient is φ = 11366208.

The previous prime is 25507051. The next prime is 25507067. The reversal of 25507066 is 66070552.

It can be written as a sum of positive squares in 4 ways, for example, as 20511841 + 4995225 = 4529^2 + 2235^2 .

It is a super-2 number, since 2×25507066² = 1301220831856712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25507067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16161 + ... + 17668.

Almost surely, 2^25507066 is an apocalyptic number.

25507066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25507066 is a deficient number, since it is larger than the sum of its proper divisors (17118734).

25507066 is a wasteful number, since it uses less digits than its factorization.

25507066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33873.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 25507066 is about 5050.4520589745. The cubic root of 25507066 is about 294.3654501855.

The spelling of 25507066 in words is "twenty-five million, five hundred seven thousand, sixty-six".