20010525 has 24 divisors (see below), whose sum is σ = 33982944. Its totient is φ = 10382400.

The previous prime is 20010517. The next prime is 20010533. The reversal of 20010525 is 52501002.

It is an interprime number because it is at equal distance from previous prime (20010517) and next prime (20010533).

It is not a de Polignac number, because 20010525 - 2³ = 20010517 is a prime.

It is a super-2 number, since 2×20010525² = 800842221551250, which contains 22 as substring.

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

It is a congruent number.

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, 831 + ... + 6380.

It is an arithmetic number, because the mean of its divisors is an integer number (1415956).

Almost surely, 2^20010525 is an apocalyptic number.

20010525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20010525 is a deficient number, since it is larger than the sum of its proper divisors (13972419).

20010525 is a wasteful number, since it uses less digits than its factorization.

20010525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7261 (or 7256 counting only the distinct ones).

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

The square root of 20010525 is about 4473.3125309998. The cubic root of 20010525 is about 271.4893687184.

Adding to 20010525 its reverse (52501002), we get a palindrome (72511527).

The spelling of 20010525 in words is "twenty million, ten thousand, five hundred twenty-five".