75725140 has 48 divisors (see below), whose sum is σ = 169186752. Its totient is φ = 28371456.

The previous prime is 75725137. The next prime is 75725149. The reversal of 75725140 is 4152757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75725149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95827 + ... + 96613.

It is an arithmetic number, because the mean of its divisors is an integer number (3524724).

Almost surely, 2^75725140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75725140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84593376).

75725140 is an abundant number, since it is smaller than the sum of its proper divisors (93461612).

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

75725140 is a wasteful number, since it uses less digits than its factorization.

75725140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 75725140 is about 8702.0193058853. The cubic root of 75725140 is about 423.0711019161.

Adding to 75725140 its reverse (4152757), we get a palindrome (79877897).

The spelling of 75725140 in words is "seventy-five million, seven hundred twenty-five thousand, one hundred forty".