425921657381 has 8 divisors (see below), whose sum is σ = 474527804544. Its totient is φ = 378963176320.

The previous prime is 425921657377. The next prime is 425921657383. The reversal of 425921657381 is 183756129524.

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

It is a cyclic number.

It is not a de Polignac number, because 425921657381 - 2² = 425921657377 is a prime.

It is a super-2 number, since 2×425921657381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425921657383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411915980 + ... + 411917013.

It is an arithmetic number, because the mean of its divisors is an integer number (59315975568).

Almost surely, 2^425921657381 is an apocalyptic number.

It is an amenable number.

425921657381 is a deficient number, since it is larger than the sum of its proper divisors (48606147163).

425921657381 is a wasteful number, since it uses less digits than its factorization.

425921657381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823833051.

The product of its digits is 3628800, while the sum is 53.

The spelling of 425921657381 in words is "four hundred twenty-five billion, nine hundred twenty-one million, six hundred fifty-seven thousand, three hundred eighty-one".