63261025 has 6 divisors (see below), whose sum is σ = 78443702. Its totient is φ = 50608800.

The previous prime is 63261019. The next prime is 63261031. The reversal of 63261025 is 52016236.

It is an interprime number because it is at equal distance from previous prime (63261019) and next prime (63261031).

It can be written as a sum of positive squares in 3 ways, for example, as 10816 + 63250209 = 104^2 + 7953^2 .

It is not a de Polignac number, because 63261025 - 2⁵ = 63260993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 2530441 = 63261025 / (6 + 3 + 2 + 6 + 1 + 0 + 2 + 5).

It is a Duffinian 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, 1265196 + ... + 1265245.

Almost surely, 2^63261025 is an apocalyptic number.

It is an amenable number.

63261025 is a deficient number, since it is larger than the sum of its proper divisors (15182677).

63261025 is a wasteful number, since it uses less digits than its factorization.

63261025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530451 (or 2530446 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 63261025 is about 7953.6799659026. The cubic root of 63261025 is about 398.4545050541.

The spelling of 63261025 in words is "sixty-three million, two hundred sixty-one thousand, twenty-five".