25620738 has 48 divisors (see below), whose sum is σ = 60556896. Its totient is φ = 7163520.

The previous prime is 25620719. The next prime is 25620739. The reversal of 25620738 is 83702652.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 25620699 and 25620708.

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 23 ways as a sum of consecutive naturals, for example, 10006 + ... + 12302.

It is an arithmetic number, because the mean of its divisors is an integer number (1261602).

Almost surely, 2^25620738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25620738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30278448).

25620738 is an abundant number, since it is smaller than the sum of its proper divisors (34936158).

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

25620738 is a wasteful number, since it uses less digits than its factorization.

25620738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339 (or 2326 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 25620738 is about 5061.6931949694. The cubic root of 25620738 is about 294.8020811669.

The spelling of 25620738 in words is "twenty-five million, six hundred twenty thousand, seven hundred thirty-eight".