3929136662025 has 63 divisors (see below), whose sum is σ = 7305350076759. Its totient is φ = 2095396834320.

The previous prime is 3929136661973. The next prime is 3929136662057. The reversal of 3929136662025 is 5202666319293.

It is a happy number.

The square root of 3929136662025 is 1982205.

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

It can be written as a sum of positive squares in only one way, i.e., 1414489198329 + 2514647463696 = 1189323^2 + 1585764^2 .

It is not a de Polignac number, because 3929136662025 - 2¹⁷ = 3929136530953 is a prime.

It is a super-2 number, since 2×3929136662025² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 267590334 + ... + 267605016.

Almost surely, 2^{3929136662025} is an apocalyptic number.

3929136662025 is the 1982205-th square number.

3929136662025 is the 991103-rd centered octagonal number.

It is an amenable number.

3929136662025 is a deficient number, since it is larger than the sum of its proper divisors (3376213414734).

3929136662025 is an frugal number, since it uses more digits than its factorization.

3929136662025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29394 (or 14691 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 54.

The spelling of 3929136662025 in words is "three trillion, nine hundred twenty-nine billion, one hundred thirty-six million, six hundred sixty-two thousand, twenty-five".