925561139 has 4 divisors (see below), whose sum is σ = 930212400. Its totient is φ = 920909880.

The previous prime is 925561123. The next prime is 925561157. The reversal of 925561139 is 931165529.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931165529 = 7 ⋅133023647.

It is a cyclic number.

It is not a de Polignac number, because 925561139 - 2⁴ = 925561123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 925561096 and 925561105.

It is not an unprimeable number, because it can be changed into a prime (925561159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2325332 + ... + 2325729.

It is an arithmetic number, because the mean of its divisors is an integer number (232553100).

Almost surely, 2^925561139 is an apocalyptic number.

925561139 is a deficient number, since it is larger than the sum of its proper divisors (4651261).

925561139 is a wasteful number, since it uses less digits than its factorization.

925561139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651260.

The product of its digits is 72900, while the sum is 41.

The square root of 925561139 is about 30423.0363211827. The cubic root of 925561139 is about 974.5445653785.

The spelling of 925561139 in words is "nine hundred twenty-five million, five hundred sixty-one thousand, one hundred thirty-nine".