63889025 has 6 divisors (see below), whose sum is σ = 79222422. Its totient is φ = 51111200.

The previous prime is 63889019. The next prime is 63889031. The reversal of 63889025 is 52098836.

It is an interprime number because it is at equal distance from previous prime (63889019) and next prime (63889031).

It can be written as a sum of positive squares in 3 ways, for example, as 7579009 + 56310016 = 2753^2 + 7504^2 .

It is not a de Polignac number, because 63889025 - 2¹⁸ = 63626881 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1277756 + ... + 1277805.

It is an arithmetic number, because the mean of its divisors is an integer number (13203737).

Almost surely, 2^63889025 is an apocalyptic number.

It is an amenable number.

63889025 is a deficient number, since it is larger than the sum of its proper divisors (15333397).

63889025 is a wasteful number, since it uses less digits than its factorization.

63889025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555571 (or 2555566 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 63889025 is about 7993.0610531886. The cubic root of 63889025 is about 399.7686683233.

The spelling of 63889025 in words is "sixty-three million, eight hundred eighty-nine thousand, twenty-five".