2401525421 has 4 divisors (see below), whose sum is σ = 2437369152. Its totient is φ = 2365681692.

The previous prime is 2401525331. The next prime is 2401525493. The reversal of 2401525421 is 1245251042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2401525421 is a prime.

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 (2401525921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17921765 + ... + 17921898.

It is an arithmetic number, because the mean of its divisors is an integer number (609342288).

Almost surely, 2^2401525421 is an apocalyptic number.

It is an amenable number.

2401525421 is a deficient number, since it is larger than the sum of its proper divisors (35843731).

2401525421 is an equidigital number, since it uses as much as digits as its factorization.

2401525421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35843730.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2401525421 is about 49005.3611454910. The cubic root of 2401525421 is about 1339.1494976110.

Adding to 2401525421 its reverse (1245251042), we get a palindrome (3646776463).

The spelling of 2401525421 in words is "two billion, four hundred one million, five hundred twenty-five thousand, four hundred twenty-one".