25620730 has 16 divisors (see below), whose sum is σ = 46988424. Its totient is φ = 10054720.

The previous prime is 25620719. The next prime is 25620739. The reversal of 25620730 is 3702652.

It can be written as a sum of positive squares in 4 ways, for example, as 24910081 + 710649 = 4991^2 + 843^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25620695 and 25620704.

It is not an unprimeable number, because it can be changed into a prime (25620739) 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, 23641 + ... + 24700.

Almost surely, 2^25620730 is an apocalyptic number.

25620730 is a deficient number, since it is larger than the sum of its proper divisors (21367694).

25620730 is a wasteful number, since it uses less digits than its factorization.

25620730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48401.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 25620730 is about 5061.6924047200. The cubic root of 25620730 is about 294.8020504832.

The spelling of 25620730 in words is "twenty-five million, six hundred twenty thousand, seven hundred thirty".