70159825129 has 9 divisors (see below), whose sum is σ = 74534424901. Its totient is φ = 66028538560.

The previous prime is 70159825103. The next prime is 70159825147. The reversal of 70159825129 is 92152895107.

The square root of 70159825129 is 264877.

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

It can be written as a sum of positive squares in 4 ways, for example, as 647448025 + 69512377104 = 25445^2 + 263652^2 .

It is not a de Polignac number, because 70159825129 - 2²³ = 70151436521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70159828129) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4495119 + ... + 4510699.

Almost surely, 2^70159825129 is an apocalyptic number.

70159825129 is the 264877-th square number.

70159825129 is the 132439-th centered octagonal number.

It is an amenable number.

70159825129 is a deficient number, since it is larger than the sum of its proper divisors (4374599772).

70159825129 is an frugal number, since it uses more digits than its factorization.

70159825129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31196 (or 15598 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 49.

Multiplying 70159825129 by its sum of digits (49), we get a square (3437831431321 = 1854139²).

The spelling of 70159825129 in words is "seventy billion, one hundred fifty-nine million, eight hundred twenty-five thousand, one hundred twenty-nine".