63387425 has 18 divisors (see below), whose sum is σ = 82183542. Its totient is φ = 48495040.

The previous prime is 63387421. The next prime is 63387449. The reversal of 63387425 is 52478336.

It can be written as a sum of positive squares in 3 ways, for example, as 12222016 + 51165409 = 3496^2 + 7153^2 .

It is not a de Polignac number, because 63387425 - 2² = 63387421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63387421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10829 + ... + 15621.

Almost surely, 2^63387425 is an apocalyptic number.

It is an amenable number.

63387425 is a deficient number, since it is larger than the sum of its proper divisors (18796117).

63387425 is a wasteful number, since it uses less digits than its factorization.

63387425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849 (or 4821 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 63387425 is about 7961.6220081086. The cubic root of 63387425 is about 398.7197085901.

The spelling of 63387425 in words is "sixty-three million, three hundred eighty-seven thousand, four hundred twenty-five".