425671429 has 4 divisors (see below), whose sum is σ = 425717100. Its totient is φ = 425625760.

The previous prime is 425671427. The next prime is 425671453. The reversal of 425671429 is 924176524.

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 can be written as a sum of positive squares in 2 ways, for example, as 248062500 + 177608929 = 15750^2 + 13327^2 .

It is a cyclic number.

It is not a de Polignac number, because 425671429 - 2¹ = 425671427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425671391 and 425671400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425671423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3262 + ... + 29359.

It is an arithmetic number, because the mean of its divisors is an integer number (106429275).

It is a Poulet number, since it divides 2^425671428-1.

Almost surely, 2^425671429 is an apocalyptic number.

425671429 is the 13049-th heptagonal number.

It is an amenable number.

425671429 is a deficient number, since it is larger than the sum of its proper divisors (45671).

425671429 is a wasteful number, since it uses less digits than its factorization.

425671429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45670.

The product of its digits is 120960, while the sum is 40.

The square root of 425671429 is about 20631.8062466668. The cubic root of 425671429 is about 752.2430208264.

The spelling of 425671429 in words is "four hundred twenty-five million, six hundred seventy-one thousand, four hundred twenty-nine".