2425781 has 8 divisors (see below), whose sum is σ = 2651904. Its totient is φ = 2208960.

The previous prime is 2425777. The next prime is 2425783. The reversal of 2425781 is 1875242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2425781 - 2² = 2425777 is a prime.

It is a super-2 number, since 2×2425781² = 11768826919922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2425783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1775 + ... + 2828.

It is an arithmetic number, because the mean of its divisors is an integer number (331488).

2^2425781 is an apocalyptic number.

It is an amenable number.

2425781 is a deficient number, since it is larger than the sum of its proper divisors (226123).

2425781 is a wasteful number, since it uses less digits than its factorization.

2425781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651.

The product of its digits is 4480, while the sum is 29.

The square root of 2425781 is about 1557.4918940399. The cubic root of 2425781 is about 134.3642905473.

The spelling of 2425781 in words is "two million, four hundred twenty-five thousand, seven hundred eighty-one".