2231625 has 32 divisors (see below), whose sum is σ = 4058496. Its totient is φ = 1080000.

The previous prime is 2231623. The next prime is 2231627. The reversal of 2231625 is 5261322.

It is an interprime number because it is at equal distance from previous prime (2231623) and next prime (2231627).

It is not a de Polignac number, because 2231625 - 2¹ = 2231623 is a prime.

It is a super-3 number, since 3×2231625³ = 33341482672716796875, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁷ + 3³ + 1 + 6³ + 2²¹ + 5⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3855 + ... + 4395.

It is an arithmetic number, because the mean of its divisors is an integer number (126828).

2^2231625 is an apocalyptic number.

2231625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2231625 is a deficient number, since it is larger than the sum of its proper divisors (1826871).

2231625 is a wasteful number, since it uses less digits than its factorization.

2231625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 560 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 2231625 is about 1493.8624434666. The cubic root of 2231625 is about 130.6793822081.

Adding to 2231625 its reverse (5261322), we get a palindrome (7492947).

The spelling of 2231625 in words is "two million, two hundred thirty-one thousand, six hundred twenty-five".