2451425521 has 4 divisors (see below), whose sum is σ = 2451583972. Its totient is φ = 2451267072.

The previous prime is 2451425519. The next prime is 2451425539. The reversal of 2451425521 is 1255241542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1255241542 = 2 ⋅627620771.

It can be written as a sum of positive squares in 2 ways, for example, as 372065521 + 2079360000 = 19289^2 + 45600^2 .

It is a cyclic number.

It is not a de Polignac number, because 2451425521 - 2¹ = 2451425519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2451425021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53160 + ... + 87913.

It is an arithmetic number, because the mean of its divisors is an integer number (612895993).

Almost surely, 2^2451425521 is an apocalyptic number.

It is an amenable number.

2451425521 is a deficient number, since it is larger than the sum of its proper divisors (158451).

2451425521 is a wasteful number, since it uses less digits than its factorization.

2451425521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158450.

The product of its digits is 16000, while the sum is 31.

The square root of 2451425521 is about 49511.8725256882. The cubic root of 2451425521 is about 1348.3611610314.

The spelling of 2451425521 in words is "two billion, four hundred fifty-one million, four hundred twenty-five thousand, five hundred twenty-one".