25776630 has 120 divisors (see below), whose sum is σ = 76473936. Its totient is φ = 6225120.

The previous prime is 25776623. The next prime is 25776631. The reversal of 25776630 is 3667752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25776631) 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 59 ways as a sum of consecutive naturals, for example, 97879 + ... + 98141.

Almost surely, 2^25776630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25776630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38236968).

25776630 is an abundant number, since it is smaller than the sum of its proper divisors (50697306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25776630 is a wasteful number, since it uses less digits than its factorization.

25776630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 25776630 is about 5077.0690363634. The cubic root of 25776630 is about 295.3987903542.

The spelling of 25776630 in words is "twenty-five million, seven hundred seventy-six thousand, six hundred thirty".