2251925 has 24 divisors (see below), whose sum is σ = 3098760. Its totient is φ = 1622400.

The previous prime is 2251913. The next prime is 2251927. The reversal of 2251925 is 5291522.

It can be written as a sum of positive squares in 12 ways, for example, as 2140369 + 111556 = 1463^2 + 334^2 .

It is not a de Polignac number, because 2251925 - 2¹⁰ = 2250901 is a prime.

It is an Ulam number.

Its product of digits (1800) is a multiple of the sum of its prime factors (90).

It is a junction number, because it is equal to n+sod(n) for n = 2251894 and 2251903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54905 + ... + 54945.

It is an arithmetic number, because the mean of its divisors is an integer number (129115).

2^2251925 is an apocalyptic number.

2251925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2251925 is a deficient number, since it is larger than the sum of its proper divisors (846835).

2251925 is an equidigital number, since it uses as much as digits as its factorization.

2251925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 59 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 2251925 is about 1500.6415294800. The cubic root of 2251925 is about 131.0744288892.

The spelling of 2251925 in words is "two million, two hundred fifty-one thousand, nine hundred twenty-five".