1236725 has 24 divisors (see below), whose sum is σ = 1809408. Its totient is φ = 820800.

The previous prime is 1236713. The next prime is 1236727. The reversal of 1236725 is 5276321.

1236725 = 91² + 92² + ... + 164².

It is not a de Polignac number, because 1236725 - 2⁴ = 1236709 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1236694 and 1236703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1236727) 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, 6380 + ... + 6570.

It is an arithmetic number, because the mean of its divisors is an integer number (75392).

2^1236725 is an apocalyptic number.

It is an amenable number.

1236725 is a deficient number, since it is larger than the sum of its proper divisors (572683).

1236725 is a wasteful number, since it uses less digits than its factorization.

1236725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 240 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 1236725 is about 1112.0813819141. The cubic root of 1236725 is about 107.3390416144.

The spelling of 1236725 in words is "one million, two hundred thirty-six thousand, seven hundred twenty-five".