1225725 has 24 divisors (see below), whose sum is σ = 2068320. Its totient is φ = 640320.

The previous prime is 1225723. The next prime is 1225727. The reversal of 1225725 is 5275221.

It is an interprime number because it is at equal distance from previous prime (1225723) and next prime (1225727).

It is not a de Polignac number, because 1225725 - 2¹ = 1225723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225695 and 1225704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225723) 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, 4287 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (86180).

2^1225725 is an apocalyptic number.

1225725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225725 is a deficient number, since it is larger than the sum of its proper divisors (842595).

1225725 is a wasteful number, since it uses less digits than its factorization.

1225725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 344 counting only the distinct ones).

The product of its digits is 1400, while the sum is 24.

The square root of 1225725 is about 1107.1246542282. The cubic root of 1225725 is about 107.0198524902.

The spelling of 1225725 in words is "one million, two hundred twenty-five thousand, seven hundred twenty-five".