1525603452 has 48 divisors (see below), whose sum is σ = 3601678080. Its totient is φ = 502564608.

The previous prime is 1525603397. The next prime is 1525603459. The reversal of 1525603452 is 2543065251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525603459) 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, 813588 + ... + 815460.

It is an arithmetic number, because the mean of its divisors is an integer number (75034960).

Almost surely, 2^1525603452 is an apocalyptic number.

1525603452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1525603452 is an abundant number, since it is smaller than the sum of its proper divisors (2076074628).

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

1525603452 is a wasteful number, since it uses less digits than its factorization.

1525603452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642 (or 2640 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 1525603452 is about 39058.9740264641. The cubic root of 1525603452 is about 1151.1905633625.

The spelling of 1525603452 in words is "one billion, five hundred twenty-five million, six hundred three thousand, four hundred fifty-two".