825078149 has 32 divisors (see below), whose sum is σ = 1010257920. Its totient is φ = 658627200.

The previous prime is 825078143. The next prime is 825078167. The reversal of 825078149 is 941870528.

It is a de Polignac number, because none of the positive numbers 2^k-825078149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825078143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1016954 + ... + 1017764.

It is an arithmetic number, because the mean of its divisors is an integer number (31570560).

Almost surely, 2^825078149 is an apocalyptic number.

825078149 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

825078149 is a deficient number, since it is larger than the sum of its proper divisors (185179771).

825078149 is a wasteful number, since it uses less digits than its factorization.

825078149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 825078149 is about 28724.1735999489. The cubic root of 825078149 is about 937.9183409166.

The spelling of 825078149 in words is "eight hundred twenty-five million, seventy-eight thousand, one hundred forty-nine".