25151020 has 24 divisors (see below), whose sum is σ = 53344368. Its totient is φ = 9960000.

The previous prime is 25150997. The next prime is 25151053. The reversal of 25151020 is 2015152.

It is a junction number, because it is equal to n+sod(n) for n = 25150985 and 25151003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4206 + ... + 8245.

It is an arithmetic number, because the mean of its divisors is an integer number (2222682).

Almost surely, 2^25151020 is an apocalyptic number.

25151020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25151020 is an abundant number, since it is smaller than the sum of its proper divisors (28193348).

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

25151020 is a wasteful number, since it uses less digits than its factorization.

25151020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12561 (or 12559 counting only the distinct ones).

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

The square root of 25151020 is about 5015.0792615870. The cubic root of 25151020 is about 292.9893724280.

Adding to 25151020 its reverse (2015152), we get a palindrome (27166172).

The spelling of 25151020 in words is "twenty-five million, one hundred fifty-one thousand, twenty".