925540421 has 4 divisors (see below), whose sum is σ = 996735852. Its totient is φ = 854344992.

The previous prime is 925540417. The next prime is 925540439. The reversal of 925540421 is 124045529.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105863521 + 819676900 = 10289^2 + 28630^2 .

It is a cyclic number.

It is not a de Polignac number, because 925540421 - 2² = 925540417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (925540411) 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 3 ways as a sum of consecutive naturals, for example, 35597696 + ... + 35597721.

It is an arithmetic number, because the mean of its divisors is an integer number (249183963).

Almost surely, 2^925540421 is an apocalyptic number.

It is an amenable number.

925540421 is a deficient number, since it is larger than the sum of its proper divisors (71195431).

925540421 is a wasteful number, since it uses less digits than its factorization.

925540421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71195430.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 925540421 is about 30422.6958207191. The cubic root of 925540421 is about 974.5372938384.

The spelling of 925540421 in words is "nine hundred twenty-five million, five hundred forty thousand, four hundred twenty-one".