2525220 has 36 divisors (see below), whose sum is σ = 7660380. Its totient is φ = 673344.

The previous prime is 2525219. The next prime is 2525221. The reversal of 2525220 is 225252.

It is an interprime number because it is at equal distance from previous prime (2525219) and next prime (2525221).

It can be written as a sum of positive squares in 2 ways, for example, as 381924 + 2143296 = 618^2 + 1464^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2525193 and 2525202.

It is not an unprimeable number, because it can be changed into a prime (2525221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6835 + ... + 7194.

2^2525220 is an apocalyptic number.

2525220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525220 is an abundant number, since it is smaller than the sum of its proper divisors (5135160).

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

2525220 is a wasteful number, since it uses less digits than its factorization.

2525220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14044 (or 14039 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2525220 is about 1589.0940815446. The cubic root of 2525220 is about 136.1757387877.

Subtracting from 2525220 its reverse (225252), we obtain a cube (2299968 = 132³).

The spelling of 2525220 in words is "two million, five hundred twenty-five thousand, two hundred twenty".