194910525 has 36 divisors (see below), whose sum is σ = 369649332. Its totient is φ = 97835520.

The previous prime is 194910497. The next prime is 194910553. The reversal of 194910525 is 525019491.

It is an interprime number because it is at equal distance from previous prime (194910497) and next prime (194910553).

It can be written as a sum of positive squares in 6 ways, for example, as 7193124 + 187717401 = 2682^2 + 13701^2 .

It is not a de Polignac number, because 194910525 - 2¹³ = 194902333 is a prime.

It is a super-2 number, since 2×194910525² = 75980225511551250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 194910525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21654 + ... + 29303.

It is an arithmetic number, because the mean of its divisors is an integer number (10268037).

Almost surely, 2^194910525 is an apocalyptic number.

194910525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194910525 is a deficient number, since it is larger than the sum of its proper divisors (174738807).

194910525 is a wasteful number, since it uses less digits than its factorization.

194910525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50990 (or 50982 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 194910525 is about 13961.0359572633. The cubic root of 194910525 is about 579.8002929169.

The spelling of 194910525 in words is "one hundred ninety-four million, nine hundred ten thousand, five hundred twenty-five".