25220075 has 18 divisors (see below), whose sum is σ = 32708844. Its totient is φ = 19288720.

The previous prime is 25220057. The next prime is 25220077. The reversal of 25220075 is 57002252.

It is not a de Polignac number, because 25220075 - 2⁸ = 25219819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25220075.

It is not an unprimeable number, because it can be changed into a prime (25220077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12272 + ... + 14178.

It is an arithmetic number, because the mean of its divisors is an integer number (1817158).

Almost surely, 2^25220075 is an apocalyptic number.

25220075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25220075 is a deficient number, since it is larger than the sum of its proper divisors (7488769).

25220075 is a wasteful number, since it uses less digits than its factorization.

25220075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963 (or 1935 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 25220075 is about 5021.9592790066. The cubic root of 25220075 is about 293.2572726634.

The spelling of 25220075 in words is "twenty-five million, two hundred twenty thousand, seventy-five".