1225375 has 8 divisors (see below), whose sum is σ = 1529424. Its totient is φ = 980200.

The previous prime is 1225373. The next prime is 1225381. The reversal of 1225375 is 5735221.

It is not a de Polignac number, because 1225375 - 2¹ = 1225373 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4777 + ... + 5026.

It is an arithmetic number, because the mean of its divisors is an integer number (191178).

2^1225375 is an apocalyptic number.

1225375 is a deficient number, since it is larger than the sum of its proper divisors (304049).

1225375 is an frugal number, since it uses more digits than its factorization.

1225375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9818 (or 9808 counting only the distinct ones).

The product of its digits is 2100, while the sum is 25.

The square root of 1225375 is about 1106.9665758278. The cubic root of 1225375 is about 107.0096651822.

It can be divided in two parts, 1225 and 375, that added together give a square (1600 = 40²).

The spelling of 1225375 in words is "one million, two hundred twenty-five thousand, three hundred seventy-five".