102503420525 has 24 divisors (see below), whose sum is σ = 138962754624. Its totient is φ = 74384726400.

The previous prime is 102503420519. The next prime is 102503420531. The reversal of 102503420525 is 525024305201.

It is an interprime number because it is at equal distance from previous prime (102503420519) and next prime (102503420531).

It is a de Polignac number, because none of the positive numbers 2^k-102503420525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282137 + ... + 533486.

It is an arithmetic number, because the mean of its divisors is an integer number (5790114776).

Almost surely, 2^102503420525 is an apocalyptic number.

It is an amenable number.

102503420525 is a deficient number, since it is larger than the sum of its proper divisors (36459334099).

102503420525 is a wasteful number, since it uses less digits than its factorization.

102503420525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816101 (or 816096 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 102503420525 its reverse (525024305201), we get a palindrome (627527725726).

The spelling of 102503420525 in words is "one hundred two billion, five hundred three million, four hundred twenty thousand, five hundred twenty-five".