1520315525 has 48 divisors (see below), whose sum is σ = 2131899264. Its totient is φ = 1069178880.

The previous prime is 1520315521. The next prime is 1520315527. The reversal of 1520315525 is 5255130251.

It is not a de Polignac number, because 1520315525 - 2² = 1520315521 is a prime.

It is a super-2 number, since 2×1520315525² = 4622718591112051250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520315521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 418517 + ... + 422133.

It is an arithmetic number, because the mean of its divisors is an integer number (44414568).

Almost surely, 2^1520315525 is an apocalyptic number.

It is an amenable number.

1520315525 is a deficient number, since it is larger than the sum of its proper divisors (611583739).

1520315525 is a wasteful number, since it uses less digits than its factorization.

1520315525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3705 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1520315525 is about 38991.2236920054. The cubic root of 1520315525 is about 1149.8589682123.

Adding to 1520315525 its reverse (5255130251), we get a palindrome (6775445776).

The spelling of 1520315525 in words is "one billion, five hundred twenty million, three hundred fifteen thousand, five hundred twenty-five".