63625240 has 32 divisors (see below), whose sum is σ = 163608480. Its totient is φ = 21814272.

The previous prime is 63625189. The next prime is 63625249. The reversal of 63625240 is 4252636.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 63625199 and 63625208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63625249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113337 + ... + 113896.

It is an arithmetic number, because the mean of its divisors is an integer number (5112765).

Almost surely, 2^63625240 is an apocalyptic number.

It is an amenable number.

63625240 is an abundant number, since it is smaller than the sum of its proper divisors (99983240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63625240 is a wasteful number, since it uses less digits than its factorization.

63625240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227251 (or 227247 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 63625240 is about 7976.5431108971. The cubic root of 63625240 is about 399.2177210966.

Adding to 63625240 its reverse (4252636), we get a palindrome (67877876).

The spelling of 63625240 in words is "sixty-three million, six hundred twenty-five thousand, two hundred forty".