25204620 has 72 divisors (see below), whose sum is σ = 82104624. Its totient is φ = 5760384.

The previous prime is 25204607. The next prime is 25204633. The reversal of 25204620 is 2640252.

It is an interprime number because it is at equal distance from previous prime (25204607) and next prime (25204633).

It is a Harshad number since it is a multiple of its sum of digits (21).

25204620 is a modest number, since divided by 4620 gives 2520 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1347 + ... + 7226.

It is an arithmetic number, because the mean of its divisors is an integer number (1140342).

Almost surely, 2^25204620 is an apocalyptic number.

25204620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25204620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41052312).

25204620 is an abundant number, since it is smaller than the sum of its proper divisors (56900004).

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

25204620 is a wasteful number, since it uses less digits than its factorization.

25204620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8599 (or 8590 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 25204620 is about 5020.4203011302. The cubic root of 25204620 is about 293.1973572023.

Adding to 25204620 its reverse (2640252), we get a palindrome (27844872).

It can be divided in two parts, 2520 and 4620, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 25204620 in words is "twenty-five million, two hundred four thousand, six hundred twenty".