425531915 has 8 divisors (see below), whose sum is σ = 514659840. Its totient is φ = 337744512.

The previous prime is 425531891. The next prime is 425531917. The reversal of 425531915 is 519135524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425531915 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425531917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334430 + ... + 335699.

It is an arithmetic number, because the mean of its divisors is an integer number (64332480).

Almost surely, 2^425531915 is an apocalyptic number.

425531915 is a deficient number, since it is larger than the sum of its proper divisors (89127925).

425531915 is a wasteful number, since it uses less digits than its factorization.

425531915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670261.

The product of its digits is 27000, while the sum is 35.

The square root of 425531915 is about 20628.4249277544. The cubic root of 425531915 is about 752.1608291849.

The spelling of 425531915 in words is "four hundred twenty-five million, five hundred thirty-one thousand, nine hundred fifteen".