2425253521 has 4 divisors (see below), whose sum is σ = 2425496500. Its totient is φ = 2425010544.

The previous prime is 2425253497. The next prime is 2425253539. The reversal of 2425253521 is 1253525242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1253525242 = 2 ⋅626762621.

It can be written as a sum of positive squares in 2 ways, for example, as 2409729921 + 15523600 = 49089^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425253521 - 2¹¹ = 2425251473 is a prime.

It is a super-2 number, since 2×2425253521² = 11763709282245794882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2425253581) 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, 105846 + ... + 126703.

It is an arithmetic number, because the mean of its divisors is an integer number (606374125).

Almost surely, 2^2425253521 is an apocalyptic number.

It is an amenable number.

2425253521 is a deficient number, since it is larger than the sum of its proper divisors (242979).

2425253521 is a wasteful number, since it uses less digits than its factorization.

2425253521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242978.

The product of its digits is 24000, while the sum is 31.

The square root of 2425253521 is about 49246.8630574578. The cubic root of 2425253521 is about 1343.5455080029.

Adding to 2425253521 its reverse (1253525242), we get a palindrome (3678778763).

The spelling of 2425253521 in words is "two billion, four hundred twenty-five million, two hundred fifty-three thousand, five hundred twenty-one".