1525210000 has 100 divisors (see below), whose sum is σ = 3779627632. Its totient is φ = 595728000.

The previous prime is 1525209997. The next prime is 1525210007. The reversal of 1525210000 is 125251.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1525210007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 428227 + ... + 431773.

Almost surely, 2^1525210000 is an apocalyptic number.

1525210000 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 1525210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1889813816).

1525210000 is an abundant number, since it is smaller than the sum of its proper divisors (2254417632).

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

1525210000 is an equidigital number, since it uses as much as digits as its factorization.

1525210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618 (or 3597 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1525210000 is about 39053.9370614539. The cubic root of 1525210000 is about 1151.0915911226.

Adding to 1525210000 its reverse (125251), we get a palindrome (1525335251).

It can be divided in two parts, 15252 and 10000, that added together give a palindrome (25252).

The spelling of 1525210000 in words is "one billion, five hundred twenty-five million, two hundred ten thousand".