100170725 has 12 divisors (see below), whose sum is σ = 125375904. Its totient is φ = 79385520.

The previous prime is 100170683. The next prime is 100170737. The reversal of 100170725 is 527071001.

It is a happy number.

It is not a de Polignac number, because 100170725 - 2¹² = 100166629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100170725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16049 + ... + 21398.

It is an arithmetic number, because the mean of its divisors is an integer number (10447992).

Almost surely, 2^100170725 is an apocalyptic number.

It is an amenable number.

100170725 is a deficient number, since it is larger than the sum of its proper divisors (25205179).

100170725 is a wasteful number, since it uses less digits than its factorization.

100170725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37564 (or 37559 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 100170725 is about 10008.5326097286. The cubic root of 100170725 is about 464.4228782677.

The spelling of 100170725 in words is "one hundred million, one hundred seventy thousand, seven hundred twenty-five".