2451425021 has 2 divisors, whose sum is σ = 2451425022. Its totient is φ = 2451425020.

The previous prime is 2451424999. The next prime is 2451425101. The reversal of 2451425021 is 1205241542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2421722521 + 29702500 = 49211^2 + 5450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2451425021 - 2¹⁴ = 2451408637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2451455021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1225712510 + 1225712511.

It is an arithmetic number, because the mean of its divisors is an integer number (1225712511).

Almost surely, 2^2451425021 is an apocalyptic number.

It is an amenable number.

2451425021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2451425021 is an equidigital number, since it uses as much as digits as its factorization.

2451425021 is an evil number, because the sum of its binary digits is even.

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

The square root of 2451425021 is about 49511.8674763940. The cubic root of 2451425021 is about 1348.3610693595.

Adding to 2451425021 its reverse (1205241542), we get a palindrome (3656666563).

The spelling of 2451425021 in words is "two billion, four hundred fifty-one million, four hundred twenty-five thousand, twenty-one".