1429525581 has 12 divisors (see below), whose sum is σ = 2095062816. Its totient is φ = 866378920.

The previous prime is 1429525561. The next prime is 1429525609. The reversal of 1429525581 is 1855259241.

It is not a de Polignac number, because 1429525581 - 2⁷ = 1429525453 is a prime.

It is a super-2 number, since 2×1429525581² = 4087086773466775122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429525561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1968681 + ... + 1969406.

It is an arithmetic number, because the mean of its divisors is an integer number (174588568).

Almost surely, 2^1429525581 is an apocalyptic number.

1429525581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1429525581 is a deficient number, since it is larger than the sum of its proper divisors (665537235).

1429525581 is a wasteful number, since it uses less digits than its factorization.

1429525581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3938112 (or 3938101 counting only the distinct ones).

The product of its digits is 144000, while the sum is 42.

The square root of 1429525581 is about 37809.0674441991. The cubic root of 1429525581 is about 1126.4985674751.

The spelling of 1429525581 in words is "one billion, four hundred twenty-nine million, five hundred twenty-five thousand, five hundred eighty-one".