102825815 has 8 divisors (see below), whose sum is σ = 129885360. Its totient is φ = 77931072.

The previous prime is 102825803. The next prime is 102825817. The reversal of 102825815 is 518528201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102825815 - 2⁴ = 102825799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102825817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541094 + ... + 541283.

It is an arithmetic number, because the mean of its divisors is an integer number (16235670).

Almost surely, 2^102825815 is an apocalyptic number.

102825815 is a deficient number, since it is larger than the sum of its proper divisors (27059545).

102825815 is a wasteful number, since it uses less digits than its factorization.

102825815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082401.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 102825815 is about 10140.3064549352. The cubic root of 102825815 is about 468.4904260039.

The spelling of 102825815 in words is "one hundred two million, eight hundred twenty-five thousand, eight hundred fifteen".