1525666230 has 96 divisors (see below), whose sum is σ = 4428103680. Its totient is φ = 361247040.

The previous prime is 1525666189. The next prime is 1525666231. The reversal of 1525666230 is 326665251.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525666231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24651 + ... + 60489.

It is an arithmetic number, because the mean of its divisors is an integer number (46126080).

Almost surely, 2^1525666230 is an apocalyptic number.

1525666230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1525666230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2214051840).

1525666230 is an abundant number, since it is smaller than the sum of its proper divisors (2902437450).

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

1525666230 is a wasteful number, since it uses less digits than its factorization.

1525666230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35906 (or 35903 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1525666230 is about 39059.7776491367. Note that the first 3 decimals coincide. The cubic root of 1525666230 is about 1151.2063534967.

The spelling of 1525666230 in words is "one billion, five hundred twenty-five million, six hundred sixty-six thousand, two hundred thirty".