1291925 has 12 divisors (see below), whose sum is σ = 1654656. Its totient is φ = 999600.

The previous prime is 1291909. The next prime is 1291931. The reversal of 1291925 is 5291921.

It is not a de Polignac number, because 1291925 - 2⁴ = 1291909 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (137888).

2^1291925 is an apocalyptic number.

It is an amenable number.

1291925 is a deficient number, since it is larger than the sum of its proper divisors (362731).

1291925 is a wasteful number, since it uses less digits than its factorization.

1291925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708 (or 1703 counting only the distinct ones).

The product of its digits is 1620, while the sum is 29.

The square root of 1291925 is about 1136.6287872476. The cubic root of 1291925 is about 108.9128445065.

The spelling of 1291925 in words is "one million, two hundred ninety-one thousand, nine hundred twenty-five".