1525542240 has 96 divisors (see below), whose sum is σ = 4960521216. Its totient is φ = 393684480.

The previous prime is 1525542233. The next prime is 1525542253. The reversal of 1525542240 is 422455251.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1525542198 and 1525542207.

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, 36382 + ... + 66141.

It is an arithmetic number, because the mean of its divisors is an integer number (51672096).

Almost surely, 2^1525542240 is an apocalyptic number.

1525542240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525542240 is an abundant number, since it is smaller than the sum of its proper divisors (3434978976).

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

1525542240 is a wasteful number, since it uses less digits than its factorization.

1525542240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102572 (or 102564 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 1525542240 is about 39058.1904342738. The cubic root of 1525542240 is about 1151.1751666967.

Adding to 1525542240 its reverse (422455251), we get a palindrome (1947997491).

The spelling of 1525542240 in words is "one billion, five hundred twenty-five million, five hundred forty-two thousand, two hundred forty".