10825991 has 24 divisors (see below), whose sum is σ = 13310640. Its totient is φ = 8743680.

The previous prime is 10825987. The next prime is 10825999. The reversal of 10825991 is 19952801.

It is not a de Polignac number, because 10825991 - 2² = 10825987 is a prime.

It is a super-2 number, since 2×10825991² = 234404162264162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10825999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38945 + ... + 39221.

It is an arithmetic number, because the mean of its divisors is an integer number (554610).

Almost surely, 2^10825991 is an apocalyptic number.

10825991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10825991 is a deficient number, since it is larger than the sum of its proper divisors (2484649).

10825991 is a wasteful number, since it uses less digits than its factorization.

10825991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 10825991 is about 3290.2873734676. The cubic root of 10825991 is about 221.2190657593.

The spelling of 10825991 in words is "ten million, eight hundred twenty-five thousand, nine hundred ninety-one".