425231550 has 72 divisors (see below), whose sum is σ = 1147118544. Its totient is φ = 112932480.

The previous prime is 425231539. The next prime is 425231581. The reversal of 425231550 is 55132524.

It is a happy number.

425231550 is a `hidden beast` number, since 425 + 231 + 5 + 5 + 0 = 666.

It is a super-2 number, since 2×425231550² = 361643742230805000, which contains 22 as substring.

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, 116554 + ... + 120146.

It is an arithmetic number, because the mean of its divisors is an integer number (15932202).

Almost surely, 2^425231550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425231550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573559272).

425231550 is an abundant number, since it is smaller than the sum of its proper divisors (721886994).

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

425231550 is a wasteful number, since it uses less digits than its factorization.

425231550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874 (or 3866 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 425231550 is about 20621.1432757740. The cubic root of 425231550 is about 751.9838146792.

The spelling of 425231550 in words is "four hundred twenty-five million, two hundred thirty-one thousand, five hundred fifty".