25516630 has 16 divisors (see below), whose sum is σ = 46998864. Its totient is φ = 9969120.

The previous prime is 25516597. The next prime is 25516633. The reversal of 25516630 is 3661552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25516633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29241 + ... + 30100.

It is an arithmetic number, because the mean of its divisors is an integer number (2937429).

Almost surely, 2^25516630 is an apocalyptic number.

25516630 is a deficient number, since it is larger than the sum of its proper divisors (21482234).

25516630 is a wasteful number, since it uses less digits than its factorization.

25516630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59391.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 25516630 is about 5051.3988161696. The cubic root of 25516630 is about 294.4022368465.

The spelling of 25516630 in words is "twenty-five million, five hundred sixteen thousand, six hundred thirty".