25115020 has 24 divisors (see below), whose sum is σ = 60276384. Its totient is φ = 8610816.

The previous prime is 25115009. The next prime is 25115023. The reversal of 25115020 is 2051152.

It is a junction number, because it is equal to n+sod(n) for n = 25114985 and 25115003.

It is not an unprimeable number, because it can be changed into a prime (25115023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89557 + ... + 89836.

It is an arithmetic number, because the mean of its divisors is an integer number (2511516).

Almost surely, 2^25115020 is an apocalyptic number.

25115020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25115020 is an abundant number, since it is smaller than the sum of its proper divisors (35161364).

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

25115020 is a wasteful number, since it uses less digits than its factorization.

25115020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179409 (or 179407 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 25115020 is about 5011.4888007457. The cubic root of 25115020 is about 292.8495152258.

Adding to 25115020 its reverse (2051152), we get a palindrome (27166172).

The spelling of 25115020 in words is "twenty-five million, one hundred fifteen thousand, twenty".