3661731525 has 24 divisors (see below), whose sum is σ = 6201728064. Its totient is φ = 1905289600.

The previous prime is 3661731517. The next prime is 3661731533. The reversal of 3661731525 is 5251371663.

It is an interprime number because it is at equal distance from previous prime (3661731517) and next prime (3661731533).

It is not a de Polignac number, because 3661731525 - 2³ = 3661731517 is a prime.

It is a super-2 number, since 2×3661731525² = 26816555522357651250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 592329 + ... + 598478.

It is an arithmetic number, because the mean of its divisors is an integer number (258405336).

Almost surely, 2^3661731525 is an apocalyptic number.

It is an amenable number.

3661731525 is a deficient number, since it is larger than the sum of its proper divisors (2539996539).

3661731525 is a wasteful number, since it uses less digits than its factorization.

3661731525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190861 (or 1190856 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 3661731525 is about 60512.2427695421. The cubic root of 3661731525 is about 1541.3295322538.

The spelling of 3661731525 in words is "three billion, six hundred sixty-one million, seven hundred thirty-one thousand, five hundred twenty-five".