825978425102 has 4 divisors (see below), whose sum is σ = 1238967637656. Its totient is φ = 412989212550.

The previous prime is 825978425101. The next prime is 825978425117. The reversal of 825978425102 is 201524879528.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825978425101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206494606274 + ... + 206494606277.

It is an arithmetic number, because the mean of its divisors is an integer number (309741909414).

Almost surely, 2^825978425102 is an apocalyptic number.

825978425102 is a deficient number, since it is larger than the sum of its proper divisors (412989212554).

825978425102 is a wasteful number, since it uses less digits than its factorization.

825978425102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412989212553.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 825978425102 in words is "eight hundred twenty-five billion, nine hundred seventy-eight million, four hundred twenty-five thousand, one hundred two".