631525248 has 160 divisors (see below), whose sum is σ = 1990517760. Its totient is φ = 198070272.

The previous prime is 631525243. The next prime is 631525259. The reversal of 631525248 is 842525136.

It is a super-2 number, since 2×631525248² = 797648277722923008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631525241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 174465 + ... + 178047.

It is an arithmetic number, because the mean of its divisors is an integer number (12440736).

Almost surely, 2^631525248 is an apocalyptic number.

631525248 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631525248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995258880).

631525248 is an abundant number, since it is smaller than the sum of its proper divisors (1358992512).

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

631525248 is a wasteful number, since it uses less digits than its factorization.

631525248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626 (or 3605 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 631525248 is about 25130.1660957503. The cubic root of 631525248 is about 857.9531491851.

The spelling of 631525248 in words is "six hundred thirty-one million, five hundred twenty-five thousand, two hundred forty-eight".