902131643525 has 12 divisors (see below), whose sum is σ = 1278449415072. Its totient is φ = 618604555440.

The previous prime is 902131643453. The next prime is 902131643527. The reversal of 902131643525 is 525346131209.

It is not a de Polignac number, because 902131643525 - 2²⁰ = 902130594949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902131643527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2577518807 + ... + 2577519156.

It is an arithmetic number, because the mean of its divisors is an integer number (106537451256).

Almost surely, 2^902131643525 is an apocalyptic number.

It is an amenable number.

902131643525 is a deficient number, since it is larger than the sum of its proper divisors (376317771547).

902131643525 is a wasteful number, since it uses less digits than its factorization.

902131643525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5155037980 (or 5155037975 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 902131643525 in words is "nine hundred two billion, one hundred thirty-one million, six hundred forty-three thousand, five hundred twenty-five".