1212925 has 24 divisors (see below), whose sum is σ = 1785600. Its totient is φ = 799680.

The previous prime is 1212923. The next prime is 1212931. The reversal of 1212925 is 5292121.

It is not a de Polignac number, because 1212925 - 2¹ = 1212923 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1212896 and 1212905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4956 + ... + 5194.

It is an arithmetic number, because the mean of its divisors is an integer number (74400).

2^1212925 is an apocalyptic number.

It is an amenable number.

1212925 is a deficient number, since it is larger than the sum of its proper divisors (572675).

1212925 is a wasteful number, since it uses less digits than its factorization.

1212925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 280 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 1212925 is about 1101.3287429283. The cubic root of 1212925 is about 106.6460192240.

Subtracting from 1212925 its sum of digits (22), we obtain a triangular number (1212903 = T₁₅₅₇).

The spelling of 1212925 in words is "one million, two hundred twelve thousand, nine hundred twenty-five".