7525215504 has 45 divisors (see below), whose sum is σ = 21063065413. Its totient is φ = 2508058176.

The previous prime is 7525215493. The next prime is 7525215541. The reversal of 7525215504 is 4055125257.

The square root of 7525215504 is 86748.

It is a perfect power (a square), and thus also a powerful number.

7525215504 is a `hidden beast` number, since 7 + 52 + 52 + 1 + 550 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7508569104 + 16646400 = 86652^2 + 4080^2 .

It is a super-3 number, since 3×7525215504³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1037362 + ... + 1044590.

Almost surely, 2^7525215504 is an apocalyptic number.

7525215504 is the 86748-th square number.

It is an amenable number.

7525215504 is an abundant number, since it is smaller than the sum of its proper divisors (13537849909).

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

7525215504 is an frugal number, since it uses more digits than its factorization.

7525215504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14472 (or 7234 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 36.

The cubic root of 7525215504 is about 1959.6250414203.

Multiplying 7525215504 by its sum of digits (36), we get a square (270907758144 = 520488²).

7525215504 divided by its sum of digits (36) gives a square (209033764 = 14458²).

The spelling of 7525215504 in words is "seven billion, five hundred twenty-five million, two hundred fifteen thousand, five hundred four".