1321925 has 36 divisors (see below), whose sum is σ = 1979040. Its totient is φ = 871200.

The previous prime is 1321919. The next prime is 1321927. The reversal of 1321925 is 5291231.

It is not a de Polignac number, because 1321925 - 2⁸ = 1321669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1321925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321927) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57464 + ... + 57486.

2^1321925 is an apocalyptic number.

It is an amenable number.

1321925 is a deficient number, since it is larger than the sum of its proper divisors (657115).

1321925 is a wasteful number, since it uses less digits than its factorization.

1321925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 58 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

The square root of 1321925 is about 1149.7499728202. The cubic root of 1321925 is about 109.7494296561.

1321925 divided by its sum of digits (23) gives a palindrome (57475).

The spelling of 1321925 in words is "one million, three hundred twenty-one thousand, nine hundred twenty-five".