425402555400 has 384 divisors, whose sum is σ = 1514999462400. Its totient is φ = 111021684480.

The previous prime is 425402555327. The next prime is 425402555429. The reversal of 425402555400 is 4555204524.

425402555400 is a `hidden beast` number, since 4 + 2 + 540 + 25 + 55 + 40 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20547454 + ... + 20568146.

It is an arithmetic number, because the mean of its divisors is an integer number (3945311100).

Almost surely, 2^425402555400 is an apocalyptic number.

425402555400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425402555400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757499731200).

425402555400 is an abundant number, since it is smaller than the sum of its proper divisors (1089596907000).

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

425402555400 is a wasteful number, since it uses less digits than its factorization.

425402555400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20777 (or 20750 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

Adding to 425402555400 its reverse (4555204524), we get a palindrome (429957759924).

The spelling of 425402555400 in words is "four hundred twenty-five billion, four hundred two million, five hundred fifty-five thousand, four hundred".