20525010 has 96 divisors (see below), whose sum is σ = 56569536. Its totient is φ = 4723200.

The previous prime is 20525009. The next prime is 20525017. The reversal of 20525010 is 1052502.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20525017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 500590 + ... + 500630.

It is an arithmetic number, because the mean of its divisors is an integer number (589266).

Almost surely, 2^20525010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20525010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28284768).

20525010 is an abundant number, since it is smaller than the sum of its proper divisors (36044526).

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

20525010 is a wasteful number, since it uses less digits than its factorization.

20525010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 20525010 is about 4530.4536196721. The cubic root of 20525010 is about 273.7964371505.

Adding to 20525010 its reverse (1052502), we get a palindrome (21577512).

The spelling of 20525010 in words is "twenty million, five hundred twenty-five thousand, ten".