681049925 has 12 divisors (see below), whose sum is σ = 846865440. Its totient is φ = 543315120.

The previous prime is 681049871. The next prime is 681049931. The reversal of 681049925 is 529940186.

It is not a de Polignac number, because 681049925 - 2¹² = 681045829 is a prime.

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, 28967 + ... + 46916.

It is an arithmetic number, because the mean of its divisors is an integer number (70572120).

Almost surely, 2^681049925 is an apocalyptic number.

It is an amenable number.

681049925 is a deficient number, since it is larger than the sum of its proper divisors (165815515).

681049925 is a wasteful number, since it uses less digits than its factorization.

681049925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76252 (or 76247 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 681049925 is about 26096.9332489471. The cubic root of 681049925 is about 879.8182841906.

The spelling of 681049925 in words is "six hundred eighty-one million, forty-nine thousand, nine hundred twenty-five".