1525666272 has 96 divisors (see below), whose sum is σ = 4320812160. Its totient is φ = 468579840.

The previous prime is 1525666267. The next prime is 1525666297. The reversal of 1525666272 is 2726665251.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1211179 + ... + 1212437.

It is an arithmetic number, because the mean of its divisors is an integer number (45008460).

Almost surely, 2^1525666272 is an apocalyptic number.

1525666272 is a gapful number since it is divisible by the number (12) 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 1525666272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2160406080).

1525666272 is an abundant number, since it is smaller than the sum of its proper divisors (2795145888).

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

1525666272 is a wasteful number, since it uses less digits than its factorization.

1525666272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2248 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 1525666272 is about 39059.7781867742. The cubic root of 1525666272 is about 1151.2063640605.

The spelling of 1525666272 in words is "one billion, five hundred twenty-five million, six hundred sixty-six thousand, two hundred seventy-two".