425389950 has 72 divisors (see below), whose sum is σ = 1167255648. Its totient is φ = 111018240.

The previous prime is 425389931. The next prime is 425389961. The reversal of 425389950 is 59983524.

It is a super-2 number, since 2×425389950² = 361913219122005000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 425389896 and 425389905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11094 + ... + 31206.

It is an arithmetic number, because the mean of its divisors is an integer number (16211884).

Almost surely, 2^425389950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425389950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583627824).

425389950 is an abundant number, since it is smaller than the sum of its proper divisors (741865698).

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

425389950 is a wasteful number, since it uses less digits than its factorization.

425389950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20178 (or 20170 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 425389950 is about 20624.9836363571. The cubic root of 425389950 is about 752.0771751469.

The spelling of 425389950 in words is "four hundred twenty-five million, three hundred eighty-nine thousand, nine hundred fifty".