4255961940 has 240 divisors, whose sum is σ = 13709691072. Its totient is φ = 1104897024.

The previous prime is 4255961869. The next prime is 4255961959. The reversal of 4255961940 is 491695524.

4255961940 is a `hidden beast` number, since 4 + 2 + 5 + 596 + 19 + 40 = 666.

It is a super-2 number, since 2×4255961940² = 36226424069457127200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12264847 + ... + 12265193.

Almost surely, 2^4255961940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4255961940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6854845536).

4255961940 is an abundant number, since it is smaller than the sum of its proper divisors (9453729132).

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

4255961940 is a wasteful number, since it uses less digits than its factorization.

4255961940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 537 counting only the distinct ones).

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

The square root of 4255961940 is about 65237.7340195075. The cubic root of 4255961940 is about 1620.5629730605.

The spelling of 4255961940 in words is "four billion, two hundred fifty-five million, nine hundred sixty-one thousand, nine hundred forty".