25620270 has 64 divisors (see below), whose sum is σ = 66769920. Its totient is φ = 6254208.

The previous prime is 25620263. The next prime is 25620271. The reversal of 25620270 is 7202652.

It is a self number, because there is not a number n which added to its sum of digits gives 25620270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69627 + ... + 69993.

It is an arithmetic number, because the mean of its divisors is an integer number (1043280).

Almost surely, 2^25620270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25620270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33384960).

25620270 is an abundant number, since it is smaller than the sum of its proper divisors (41149650).

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

25620270 is a wasteful number, since it uses less digits than its factorization.

25620270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 25620270 is about 5061.6469651686. The cubic root of 25620270 is about 294.8002861599.

The spelling of 25620270 in words is "twenty-five million, six hundred twenty thousand, two hundred seventy".