102172152325 has 24 divisors (see below), whose sum is σ = 128793629448. Its totient is φ = 80389140480.

The previous prime is 102172152289. The next prime is 102172152347. The reversal of 102172152325 is 523251271201.

It can be written as a sum of positive squares in 12 ways, for example, as 64068721924 + 38103430401 = 253118^2 + 195201^2 .

It is not a de Polignac number, because 102172152325 - 2⁹ = 102172151813 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, 564927 + ... + 723523.

It is an arithmetic number, because the mean of its divisors is an integer number (5366401227).

Almost surely, 2^102172152325 is an apocalyptic number.

It is an amenable number.

102172152325 is a deficient number, since it is larger than the sum of its proper divisors (26621477123).

102172152325 is a wasteful number, since it uses less digits than its factorization.

102172152325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159033 (or 159028 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 102172152325 in words is "one hundred two billion, one hundred seventy-two million, one hundred fifty-two thousand, three hundred twenty-five".