2190425 has 12 divisors (see below), whose sum is σ = 2783676. Its totient is φ = 1708800.

The previous prime is 2190413. The next prime is 2190427. The reversal of 2190425 is 5240912.

It can be written as a sum of positive squares in 6 ways, for example, as 929296 + 1261129 = 964^2 + 1123^2 .

It is not a de Polignac number, because 2190425 - 2⁶ = 2190361 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2190425.

It is not an unprimeable number, because it can be changed into a prime (2190427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (231973).

2^2190425 is an apocalyptic number.

2190425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2190425 is a deficient number, since it is larger than the sum of its proper divisors (593251).

2190425 is a wasteful number, since it uses less digits than its factorization.

2190425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2190425 is about 1480.0084459218. The cubic root of 2190425 is about 129.8701859967.

It can be divided in two parts, 21904 and 25, that multiplied together give a square (547600 = 740²).

The spelling of 2190425 in words is "two million, one hundred ninety thousand, four hundred twenty-five".