25530994 has 16 divisors (see below), whose sum is σ = 38918232. Its totient is φ = 12560128.

The previous prime is 25530977. The next prime is 25530997. The reversal of 25530994 is 49903552.

It can be written as a sum of positive squares in 4 ways, for example, as 16916769 + 8614225 = 4113^2 + 2935^2 .

It is not an unprimeable number, because it can be changed into a prime (25530997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38772 + ... + 39424.

Almost surely, 2^25530994 is an apocalyptic number.

25530994 is a deficient number, since it is larger than the sum of its proper divisors (13387238).

25530994 is a wasteful number, since it uses less digits than its factorization.

25530994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 25530994 is about 5052.8204005288. The cubic root of 25530994 is about 294.4574688067.

The spelling of 25530994 in words is "twenty-five million, five hundred thirty thousand, nine hundred ninety-four".