6139506025 has 9 divisors (see below), whose sum is σ = 7613473303. Its totient is φ = 4911291400.

The previous prime is 6139506019. The next prime is 6139506031. The reversal of 6139506025 is 5206059316.

The square root of 6139506025 is 78355.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (6139506019) and next prime (6139506031).

It can be written as a sum of positive squares in only one way, i.e., 2210222169 + 3929283856 = 47013^2 + 62684^2 .

It is not a de Polignac number, because 6139506025 - 2⁹ = 6139505513 is a prime.

It is a super-2 number, since 2×6139506025² = 75387068462022601250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 383940 + ... + 399610.

Almost surely, 2^6139506025 is an apocalyptic number.

6139506025 is the 78355-th square number.

6139506025 is the 39178-th centered octagonal number.

It is an amenable number.

6139506025 is a deficient number, since it is larger than the sum of its proper divisors (1473967278).

6139506025 is an frugal number, since it uses more digits than its factorization.

6139506025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31352 (or 15676 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The cubic root of 6139506025 is about 1831.0961238533.

The spelling of 6139506025 in words is "six billion, one hundred thirty-nine million, five hundred six thousand, twenty-five".