425164390 has 32 divisors (see below), whose sum is σ = 926074944. Its totient is φ = 137195520.

The previous prime is 425164307. The next prime is 425164391. The reversal of 425164390 is 93461524.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425164391) 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, 177451 + ... + 179830.

It is an arithmetic number, because the mean of its divisors is an integer number (28939842).

Almost surely, 2^425164390 is an apocalyptic number.

425164390 is an abundant number, since it is smaller than the sum of its proper divisors (500910554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425164390 is a wasteful number, since it uses less digits than its factorization.

425164390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357312.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 425164390 is about 20619.5147857558. The cubic root of 425164390 is about 751.9442237849.

The spelling of 425164390 in words is "four hundred twenty-five million, one hundred sixty-four thousand, three hundred ninety".