1255725 has 18 divisors (see below), whose sum is σ = 2249546. Its totient is φ = 669600.

The previous prime is 1255721. The next prime is 1255747. The reversal of 1255725 is 5275521.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 30276 + 1225449 = 174^2 + 1107^2 .

It is not a de Polignac number, because 1255725 - 2² = 1255721 is a prime.

It is a hoax number, since the sum of its digits (27) 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255721) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2566 + ... + 3015.

2^1255725 is an apocalyptic number.

1255725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1255725 is a deficient number, since it is larger than the sum of its proper divisors (993821).

1255725 is a wasteful number, since it uses less digits than its factorization.

1255725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597 (or 5589 counting only the distinct ones).

The product of its digits is 3500, while the sum is 27.

The square root of 1255725 is about 1120.5913617372. The cubic root of 1255725 is about 107.8859392516.

The spelling of 1255725 in words is "one million, two hundred fifty-five thousand, seven hundred twenty-five".