425718927381 has 16 divisors (see below), whose sum is σ = 619979973120. Its totient is φ = 257697953520.

The previous prime is 425718927371. The next prime is 425718927383. The reversal of 425718927381 is 183729817524.

It is a happy number.

It is not a de Polignac number, because 425718927381 - 2¹⁸ = 425718665237 is a prime.

It is a super-2 number, since 2×425718927381² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425718927383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7810371 + ... + 7864688.

It is an arithmetic number, because the mean of its divisors is an integer number (38748748320).

Almost surely, 2^425718927381 is an apocalyptic number.

It is an amenable number.

425718927381 is a deficient number, since it is larger than the sum of its proper divisors (194261045739).

425718927381 is a wasteful number, since it uses less digits than its factorization.

425718927381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15675896.

The product of its digits is 6773760, while the sum is 57.

The spelling of 425718927381 in words is "four hundred twenty-five billion, seven hundred eighteen million, nine hundred twenty-seven thousand, three hundred eighty-one".