25353620 has 12 divisors (see below), whose sum is σ = 53242644. Its totient is φ = 10141440.

The previous prime is 25353593. The next prime is 25353623. The reversal of 25353620 is 2635352.

It can be written as a sum of positive squares in 2 ways, for example, as 15904144 + 9449476 = 3988^2 + 3074^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25353620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25353623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633821 + ... + 633860.

It is an arithmetic number, because the mean of its divisors is an integer number (4436887).

Almost surely, 2^25353620 is an apocalyptic number.

25353620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25353620 is an abundant number, since it is smaller than the sum of its proper divisors (27889024).

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

25353620 is a wasteful number, since it uses less digits than its factorization.

25353620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267690 (or 1267688 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 25353620 is about 5035.2378295370. The cubic root of 25353620 is about 293.7739790294.

Adding to 25353620 its reverse (2635352), we get a palindrome (27988972).

The spelling of 25353620 in words is "twenty-five million, three hundred fifty-three thousand, six hundred twenty".