1525352500 has 120 divisors (see below), whose sum is σ = 3854366208. Its totient is φ = 517200000.

The previous prime is 1525352467. The next prime is 1525352537. The reversal of 1525352500 is 52535251.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1767069 + ... + 1767931.

Almost surely, 2^1525352500 is an apocalyptic number.

1525352500 is a gapful number since it is divisible by the number (10) 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 1525352500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1927183104).

1525352500 is an abundant number, since it is smaller than the sum of its proper divisors (2329013708).

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

1525352500 is a wasteful number, since it uses less digits than its factorization.

1525352500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 1525352500 is about 39055.7614187715. The cubic root of 1525352500 is about 1151.1274387421.

Adding to 1525352500 its reverse (52535251), we get a palindrome (1577887751).

It can be divided in two parts, 1525 and 352500, that added together give a square (354025 = 595²).

The spelling of 1525352500 in words is "one billion, five hundred twenty-five million, three hundred fifty-two thousand, five hundred".