525281140 has 12 divisors (see below), whose sum is σ = 1103090436. Its totient is φ = 210112448.

The previous prime is 525281069. The next prime is 525281149. The reversal of 525281140 is 41182525.

It can be written as a sum of positive squares in 2 ways, for example, as 394499044 + 130782096 = 19862^2 + 11436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 525281099 and 525281108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525281149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13132009 + ... + 13132048.

It is an arithmetic number, because the mean of its divisors is an integer number (91924203).

Almost surely, 2^525281140 is an apocalyptic number.

It is an amenable number.

525281140 is an abundant number, since it is smaller than the sum of its proper divisors (577809296).

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

525281140 is a wasteful number, since it uses less digits than its factorization.

525281140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26264066 (or 26264064 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 525281140 is about 22919.0126314377. The cubic root of 525281140 is about 806.8582971029.

The spelling of 525281140 in words is "five hundred twenty-five million, two hundred eighty-one thousand, one hundred forty".