1297725 has 48 divisors (see below), whose sum is σ = 2541504. Its totient is φ = 580800.

The previous prime is 1297693. The next prime is 1297727. The reversal of 1297725 is 5277921.

It is not a de Polignac number, because 1297725 - 2⁵ = 1297693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99819 + ... + 99831.

It is an arithmetic number, because the mean of its divisors is an integer number (52948).

2^1297725 is an apocalyptic number.

1297725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1297725 is a deficient number, since it is larger than the sum of its proper divisors (1243779).

1297725 is a wasteful number, since it uses less digits than its factorization.

1297725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59 (or 32 counting only the distinct ones).

The product of its digits is 8820, while the sum is 33.

The square root of 1297725 is about 1139.1773347464. The cubic root of 1297725 is about 109.0755865474.

The spelling of 1297725 in words is "one million, two hundred ninety-seven thousand, seven hundred twenty-five".