140525568 has 90 divisors (see below), whose sum is σ = 406376334. Its totient is φ = 46792704.

The previous prime is 140525563. The next prime is 140525569. The reversal of 140525568 is 865525041.

140525568 is a `hidden beast` number, since 1 + 40 + 52 + 5 + 568 = 666.

It can be written as a sum of positive squares in only one way, i.e., 115605504 + 24920064 = 10752^2 + 4992^2 .

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

It is not an unprimeable number, because it can be changed into a prime (140525563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146980 + ... + 147932.

Almost surely, 2^140525568 is an apocalyptic number.

140525568 is a gapful number since it is divisible by the number (18) 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 140525568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203188167).

140525568 is an abundant number, since it is smaller than the sum of its proper divisors (265850766).

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

140525568 is an frugal number, since it uses more digits than its factorization.

140525568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 140525568 is about 11854.3480630526. The cubic root of 140525568 is about 519.8983627787.

The spelling of 140525568 in words is "one hundred forty million, five hundred twenty-five thousand, five hundred sixty-eight".