129225151441 has 3 divisors (see below), whose sum is σ = 129225510921. Its totient is φ = 129224791962.

The previous prime is 129225151423. The next prime is 129225151477. The reversal of 129225151441 is 144151522921.

The square root of 129225151441 is 359479.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 129225151441 - 2⁵ = 129225151409 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129225151441.

It is not an unprimeable number, because it can be changed into a prime (129225155441) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 179740 + ... + 539218.

It is an arithmetic number, because the mean of its divisors is an integer number (43075170307).

Almost surely, 2^129225151441 is an apocalyptic number.

129225151441 is the 359479-th square number.

129225151441 is the 179740-th centered octagonal number.

It is an amenable number.

129225151441 is a deficient number, since it is larger than the sum of its proper divisors (359480).

129225151441 is an frugal number, since it uses more digits than its factorization.

129225151441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718958 (or 359479 counting only the distinct ones).

The product of its digits is 28800, while the sum is 37.

The spelling of 129225151441 in words is "one hundred twenty-nine billion, two hundred twenty-five million, one hundred fifty-one thousand, four hundred forty-one".