2425152421 has 2 divisors, whose sum is σ = 2425152422. Its totient is φ = 2425152420.

The previous prime is 2425152329. The next prime is 2425152427. The reversal of 2425152421 is 1242515242.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2175196321 + 249956100 = 46639^2 + 15810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425152421 - 2⁷ = 2425152293 is a prime.

It is a super-2 number, since 2×2425152421² = 11762728530164322482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2425152421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2425152427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1212576210 + 1212576211.

It is an arithmetic number, because the mean of its divisors is an integer number (1212576211).

Almost surely, 2^2425152421 is an apocalyptic number.

It is an amenable number.

2425152421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2425152421 is an equidigital number, since it uses as much as digits as its factorization.

2425152421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6400, while the sum is 28.

The square root of 2425152421 is about 49245.8365854414. The cubic root of 2425152421 is about 1343.5268385680.

Adding to 2425152421 its reverse (1242515242), we get a palindrome (3667667663).

It can be divided in two parts, 2425 and 152421, that added together give a triangular number (154846 = T₅₅₆).

The spelling of 2425152421 in words is "two billion, four hundred twenty-five million, one hundred fifty-two thousand, four hundred twenty-one".